eCommerce ﹥ Shopify Plus migration
Still on Magento? Time for Shopify Plus.
Still onTime forMagento?Shopware?Salesforce?Lightspeed?PrestaShop?Shopify Plus.Flatline moves growing brands off Magento, Lightspeed, WooCommerce and Shopware onto Shopify Plus. Products, customers, orders, URLs and integrations go into one migration plan before anything is built, so launch day is a switch, not a gamble. Mason Garments, Malelions and OGÉR made the move with us.
Shopify Platinum Partner · 2× Agency of the Year
We build and grow digital platforms for brands that expect their commerce to perform, from fashion and beauty to mobility and consumer electronics. These are some of the companies we work with.
We build and grow digital platforms for brands that expect their commerce to perform, from fashion and beauty to mobility and consumer electronics. These are some of the companies we work with.
We build and grow digital platforms for brands that expect their commerce to perform, from fashion and beauty to mobility and consumer electronics. These are some of the companies we work with.
Why Shopify Plus
Every channel, one platform.
Your online store, retail stores, international markets, B2B and social selling run from one back office: one catalogue, one customer record, one checkout. No sync jobs between systems, and the same catalogue feeds AI shopping channels.
After go-live
Built to convert from day one.
A migration only pays off when the numbers move. Shopify’s checkout, speed and payment options do much of that work out of the box. We build the store, the data and the tracking around them, so you can see exactly what changed after launch.
A migration only pays off when the numbers move. Shopify’s checkout, speed and payment options do much of that work out of the box. We build the store, the data and the tracking around them, so you can see exactly what changed after launch.
Example dashboard for illustration, not client data.
36
36
%
Up to 36% better checkout conversion than competing platforms, and 15% better on average.
Source: Shopify, checkout study (2023)
76
76
%
of Shopify stores have good Core Web Vitals on mobile, against 35% on Magento and 35% on WooCommerce.
Source: HTTP Archive, Web Almanac 2025
50
50
%
Up to 50% higher conversion with Shop Pay than with a guest checkout.
Source: Shopify (2023)
Brands we moved to Shopify Plus
When Flatline is the right Shopify partner
Global disruptor in custom development & end-to-end production partner
WHEN WE FIT
We fit when you are replatforming from Magento, WooCommerce, Shopware or Lightspeed, when your current store no longer matches the complexity of the business, when D2C, retail and B2B have to work as one system, when you run multiple markets and catalogues, or when you need a team for CRO and ongoing development after launch.
When Flatline is the right Shopify partner
Global disruptor in custom development & end-to-end production partner
WHEN WE FIT
We fit when you are replatforming from Magento, WooCommerce, Shopware or Lightspeed, when your current store no longer matches the complexity of the business, when D2C, retail and B2B have to work as one system, when you run multiple markets and catalogues, or when you need a team for CRO and ongoing development after launch.
When Flatline is the right Shopify partner
Global disruptor in custom development & end-to-end production partner
WHEN WE FIT
We fit when you are replatforming from Magento, WooCommerce, Shopware or Lightspeed, when your current store no longer matches the complexity of the business, when D2C, retail and B2B have to work as one system, when you run multiple markets and catalogues, or when you need a team for CRO and ongoing development after launch.
How a migration runs
(01)
Audit and plan
We map your catalogue, customer and order data, URLs, apps and integrations, and decide what moves, what gets rebuilt and what can go.
(02)
Design and build
Your store on Shopify Plus, on our starter theme or a custom design, with checkout, markets and B2B set up the way you sell.
(03)
Migrate and test
Full test migrations of products, customers and orders, a 301 redirect for every old URL, and checks on payments, emails and tracking.
(04)
Launch and grow
Go live with the team on standby, then compare rankings, speed and conversion with the old platform and keep improving.
F.A.Q.
We’d love to answer all your questions
Will we lose our Google rankings when we migrate?
Not when the migration is planned for it. We map every old URL to its new address with a 301 redirect, carry over page titles, meta descriptions and structured data, and compare rankings, traffic and crawl errors before and after launch, so issues surface right away instead of months later.
Which data can you migrate?
Products and variants, collections, customers, order history, gift cards, reviews, blog posts and pages, plus your URL structure. Customer passwords cannot be moved between platforms for security reasons, so we set up an account activation email for returning customers.
Can we keep our ERP, PIM and other systems?
Usually, yes. Shopify Plus connects to ERP, PIM, WMS and POS systems through apps, middleware or a custom integration. We list every system and data flow in the migration plan, so you know what connects how before the build starts.
Is Shopify Plus right for us, or is Shopify enough?
That depends on your checkout needs, the number of stores and markets, B2B and automation. We look at your setup and advise the plan that fits, and we tell you when a regular Shopify plan is the better choice.
How long does a migration take, and what does it cost?
That depends on your catalogue, integrations and design. After a short call and a look at your current platform, you get a migration plan with scope, timeline and budget, so you can compare it with staying where you are.
F.A.Q.
We’d love to answer all your questions
Will we lose our Google rankings when we migrate?
Not when the migration is planned for it. We map every old URL to its new address with a 301 redirect, carry over page titles, meta descriptions and structured data, and compare rankings, traffic and crawl errors before and after launch, so issues surface right away instead of months later.
Which data can you migrate?
Products and variants, collections, customers, order history, gift cards, reviews, blog posts and pages, plus your URL structure. Customer passwords cannot be moved between platforms for security reasons, so we set up an account activation email for returning customers.
Can we keep our ERP, PIM and other systems?
Usually, yes. Shopify Plus connects to ERP, PIM, WMS and POS systems through apps, middleware or a custom integration. We list every system and data flow in the migration plan, so you know what connects how before the build starts.
Is Shopify Plus right for us, or is Shopify enough?
That depends on your checkout needs, the number of stores and markets, B2B and automation. We look at your setup and advise the plan that fits, and we tell you when a regular Shopify plan is the better choice.
How long does a migration take, and what does it cost?
That depends on your catalogue, integrations and design. After a short call and a look at your current platform, you get a migration plan with scope, timeline and budget, so you can compare it with staying where you are.
F.A.Q.
We’d love to answer all your questions
Will we lose our Google rankings when we migrate?
Not when the migration is planned for it. We map every old URL to its new address with a 301 redirect, carry over page titles, meta descriptions and structured data, and compare rankings, traffic and crawl errors before and after launch, so issues surface right away instead of months later.
Which data can you migrate?
Products and variants, collections, customers, order history, gift cards, reviews, blog posts and pages, plus your URL structure. Customer passwords cannot be moved between platforms for security reasons, so we set up an account activation email for returning customers.
Can we keep our ERP, PIM and other systems?
Usually, yes. Shopify Plus connects to ERP, PIM, WMS and POS systems through apps, middleware or a custom integration. We list every system and data flow in the migration plan, so you know what connects how before the build starts.
Is Shopify Plus right for us, or is Shopify enough?
That depends on your checkout needs, the number of stores and markets, B2B and automation. We look at your setup and advise the plan that fits, and we tell you when a regular Shopify plan is the better choice.
How long does a migration take, and what does it cost?
That depends on your catalogue, integrations and design. After a short call and a look at your current platform, you get a migration plan with scope, timeline and budget, so you can compare it with staying where you are.
Plan your move to Shopify Plus
Tell us which platform you are on, what has to come along and when you want to be live. A Shopify specialist reads every request and replies with a concrete next step, such as a short call or a first look at your current setup.
What do they say
4.9 out of 5 · 145 reviews
“Integrations with our back office, marketing automation, CS, fulfilment and payment providers were part of the same scope instead of a later phase.”
Flatline migrated OGÉR from Magento to Shopify Plus and rebuilt the marketing stack around it, bringing five stores and the online store onto one system.
OGÉR, store migration · Shopify Partner Directory
“They don’t just wait for instructions, but actively think along with us, challenge ideas when needed and look for solutions that make sense for the business.”
I’ve worked with many different partners over the years, and for me the biggest difference is always ownership. That’s something I really value in working with Flatline Agency.
Lofty Manner, ongoing website management · Shopify Partner Directory
“Our business has grown significantly, and the optimizations Flatline implemented across our website have definitely contributed to that growth.”
We’ve really enjoyed working with Flatline Agency and are very happy with the results we’ve achieved together.
Olivia & Kate, conversion rate optimization · Shopify Partner Directory
“Outstanding performance at a fair price.”
Flatline has built a Shopify site from scratch for us including UX, Design, API connections, Hosting, CRO etc. within 3 months.
Antoine Brouwer, CEO High Clean, store build · Shopify Partner Directory
What do they say
4.9 out of 5 · 145 reviews
“Integrations with our back office, marketing automation, CS, fulfilment and payment providers were part of the same scope instead of a later phase.”
Flatline migrated OGÉR from Magento to Shopify Plus and rebuilt the marketing stack around it, bringing five stores and the online store onto one system.
OGÉR, store migration · Shopify Partner Directory
“They don’t just wait for instructions, but actively think along with us, challenge ideas when needed and look for solutions that make sense for the business.”
I’ve worked with many different partners over the years, and for me the biggest difference is always ownership. That’s something I really value in working with Flatline Agency.
Lofty Manner, ongoing website management · Shopify Partner Directory
“Our business has grown significantly, and the optimizations Flatline implemented across our website have definitely contributed to that growth.”
We’ve really enjoyed working with Flatline Agency and are very happy with the results we’ve achieved together.
Olivia & Kate, conversion rate optimization · Shopify Partner Directory
“Outstanding performance at a fair price.”
Flatline has built a Shopify site from scratch for us including UX, Design, API connections, Hosting, CRO etc. within 3 months.
Antoine Brouwer, CEO High Clean, store build · Shopify Partner Directory
What do they say
4.9 out of 5 · 145 reviews
“Integrations with our back office, marketing automation, CS, fulfilment and payment providers were part of the same scope instead of a later phase.”
Flatline migrated OGÉR from Magento to Shopify Plus and rebuilt the marketing stack around it, bringing five stores and the online store onto one system.
OGÉR, store migration · Shopify Partner Directory
“They don’t just wait for instructions, but actively think along with us, challenge ideas when needed and look for solutions that make sense for the business.”
I’ve worked with many different partners over the years, and for me the biggest difference is always ownership. That’s something I really value in working with Flatline Agency.
Lofty Manner, ongoing website management · Shopify Partner Directory
“Our business has grown significantly, and the optimizations Flatline implemented across our website have definitely contributed to that growth.”
We’ve really enjoyed working with Flatline Agency and are very happy with the results we’ve achieved together.
Olivia & Kate, conversion rate optimization · Shopify Partner Directory
“Outstanding performance at a fair price.”
Flatline has built a Shopify site from scratch for us including UX, Design, API connections, Hosting, CRO etc. within 3 months.
Antoine Brouwer, CEO High Clean, store build · Shopify Partner Directory