
Key takeaways
- Inflow's case study reports Simms Fishing's organic traffic grew 126% year over year in the roughly 10 months following its early 2022 Magento to Shopify migration.
- In the first 4 months after launch, non-brand category page traffic rose 5,642% and the non-brand keyword footprint rose 1,095%, per the agency's published figures.
- The gains are attributed mainly to splitting broad category pages, such as one combined "fishing shirts" page, into narrower pages for hoodies, T-shirts and flannels.
- Inflow frames the result as going beyond ordinary migration maintenance, crediting new content and URL structure work done alongside the platform switch.
- The case study does not publish raw session or keyword-count numbers behind the percentages, so the figures here are relative gains, not absolute traffic volumes.
Most published migration case studies report a percentage and stop there. Inflow, the agency behind this one, at least names the client, dates the migration to early 2022 and separates two different measurement windows, which makes it possible to check what is actually being claimed. The client is Simms Fishing, a fly fishing gear retailer, and the migration was a platform switch from Magento to Shopify.
What happened and when
Inflow had worked with Simms Fishing since September 2018. The site migration itself launched in early 2022. Inflow’s write-up gives two separate result windows rather than one blended number: a 4-month mark (its charts run January through May 2022) for the non-brand metrics, and an almost 10-month mark for the year-over-year organic traffic figure.
The numbers, as Inflow states them
Organic traffic was up 126% year over year at the later measurement point. In the earlier 4-month window, non-brand category page traffic was up 5,642% and the non-brand keyword footprint was up 1,095%. Inflow does not publish the raw session counts or keyword totals behind any of these percentages, so what is verifiable here is the relative growth the agency reports, not the site’s actual traffic volume before or after.
What drove the non-brand jump
Inflow’s account credits a specific content and information-architecture change made alongside
the platform switch, not the migration by itself. The old site had consolidated categories, one
“fishing shirts” page under a URL like /t-shirts-hoodies covering hoodies, T-shirts and
flannels together. The new structure split that into dedicated pages, /fishing-hoodies/,
/fishing-t-shirts/ and /fishing-flannels/, plus similar splits for hats and shoes. Each
narrower page could then rank for its own non-brand search terms instead of competing with its
siblings for one shared URL. Inflow’s own framing is explicit that this went beyond migration
maintenance: “our new content work with Simms took their results beyond the expected.”
Why we care
A platform migration is usually described as a risk to be survived without traffic loss. This case is one of the more specific published examples of a migration used as the occasion for a structural fix, splitting overly broad category pages, that the agency credits for most of the non-brand gain. The lesson worth taking is the mechanism, not the multiplier: 5,642% is a relative jump on non-brand category traffic, from a starting point Inflow does not publish, not a number to expect on a different site’s migration. What travels is the idea that a re-platform is a legitimate moment to also fix a URL structure that was silently capping how many search terms your category pages could ever rank for.
The evidence
- Subject
- Simms Fishing's Magento to Shopify migration
- Timeframe
- Migrated early 2022, tracked 10 months
- Verified
- Yes, against first-party data
| Metric | Before | After |
|---|---|---|
| Organic traffic, year over year (about 10 months post-migration) | 0% | 126% |
| Non-brand category page traffic (4 months post-migration) | 0% | 5642% |
| Non-brand keyword footprint (4 months post-migration) | 0% | 1095% |
Sources
- 1.eCommerce SEO Migration Case Study: 126% Increase in Traffic - InflowPrimary
Common questions
What platform migration did Simms Fishing go through?
Per Inflow's published case study, Simms Fishing, a fly fishing gear retailer, moved from Magento to Shopify, with the new site launching in early 2022.
What were the actual results?
Inflow reports organic traffic up 126% year over year roughly 10 months after launch. In the first 4 months, non-brand category page traffic was up 5,642% and the non-brand keyword footprint was up 1,095%.
What caused the non-brand traffic jump specifically?
Inflow's write-up credits splitting broad category pages into narrower ones, for example turning one combined "fishing shirts" page into separate pages for hoodies, T-shirts and flannels, each able to rank for its own non-brand search terms, rather than the platform switch by itself.
Are these absolute traffic numbers or percentage changes?
Percentage changes. Inflow's case study does not publish the underlying session counts or keyword counts, so the figures here describe relative growth, not the site's actual traffic volume.
About the author

Founder, UpgradIQ FZC LLC
Adam Hafez works on technical SEO and search measurement: how pages get crawled, indexed, ranked and now quoted by answer engines. He founded UpgradIQ, which reads Google Search Console and GA4 to tie ranking movement back to the changes that caused it. He publishes what the data supports and states the limits of it.
- Technical SEO
- Search Console and GA4
- Answer engine optimization
- Structured data
The briefing
Only what actually changed in search, delivered in full by RSS, Atom or JSON feed.
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