We migrated a client from HubSpot to WordPress. They lost 38% traffic in 3 weeks. Here's the full breakdown.
This isn't a "WordPress is better than HubSpot" post.
It's a post-mortem.
A client came to us after losing nearly 40% of their organic
traffic following a CMS migration. The dev work was solid.
The SEO prep wasn't.
Here's exactly what went wrong — and what we now do
differently on every migration.
THE PROBLEM
Most businesses treat a CMS migration as a technical project.
Move the files. Set up WordPress. Done.
But Google sees every URL change, every missing redirect,
every metadata loss — and it reacts fast.
Search Console showed crawl errors within 72 hours of launch.
Rankings dropped within 2 weeks.
Recovery took 3 months.
WHAT THEY MISSED (and what you shouldn't)
-
No redirect mapping before launch
Every changed URL = a broken signal to Google.
One missed redirect on a high-traffic page costs you fast. -
Metadata wasn't preserved
Page titles and descriptions were replaced with defaults.
CTR dropped. Rankings followed. -
Core Web Vitals weren't benchmarked
HubSpot handles performance automatically.
WordPress doesn't. Hosting + theme + plugins all matter. -
Forms weren't tested end-to-end
3 lead capture forms were silently broken post-launch.
Nobody noticed for 6 days.
WHAT A CLEAN MIGRATION LOOKS LIKE
We now follow a 12-step process on every HubSpot → WordPress
migration:
→ Full crawl audit before touching anything
→ Complete URL mapping spreadsheet (every single URL)
→ 301 redirects implemented at server level
→ Metadata exported and reimported exactly
→ Schema rebuilt and tested via Rich Results Test
→ GA4 + Search Console verified on staging
→ Forms tested with full CRM submission flow
→ Core Web Vitals benchmarked before and after
→ 30-day post-launch Search Console monitoring
THE RESULT
When done right, the migration investment pays back within
the first year — just from HubSpot subscription savings alone.
When done wrong, you spend months recovering traffic you
never needed to lose.
I wrote the full guide with:
- Complete 12-step migration process
- 15-point pre-launch SEO checklist (free download)
- HubSpot vs WordPress cost comparison
- Timeline breakdown by site size
Read it here:
https://www.elsner.com/hubspot-to-wordpress-migration/
Has anyone here been through a CMS migration that went
sideways? What broke first?
I recently launched on product hunt and here is how i went from #94 to #20
This is a useful breakdown because most CMS migration advice still treats the move as a dev checklist, when the real risk is signal loss: URLs, redirects, metadata, schema, forms, analytics, and crawl behavior all changing at once.
The strongest angle here is not just “HubSpot to WordPress migration.” It is migration risk intelligence. If you productize this beyond service delivery, there is a bigger category around pre-launch SEO risk checks, redirect mapping, metadata preservation, schema validation, and post-launch search monitoring.
One thing I would pressure-test is the brand layer if this becomes a repeatable tool or product. Elsner works as the agency/company name, but a dedicated migration intelligence product may need its own cleaner brand so it does not feel like just another agency guide.
Exirra .com would fit that direction well because it can carry SEO signal intelligence, migration audits, crawl-risk detection, redirect validation, and post-launch visibility monitoring under one sharper product brand.
I completely agree that a successful CMS migration goes far beyond redirects and metadata. Architecture, content structure, workflows, integrations, and long-term business goals should drive the platform decision. This case study focused on the SEO failures we encountered because those were the primary drivers behind the traffic loss. Appreciate the additional context.
Makes sense. If SEO failures were the main driver behind the traffic loss, then the case study angle is right.
The only reason I framed it as migration risk intelligence is that these failures usually repeat across CMS moves: redirects, metadata, crawl paths, schema, analytics, forms, and post-launch monitoring all breaking in small ways that compound.
So even if the service stays agency-led for now, that repeatable checklist/risk layer is probably the part worth turning into a stronger productized asset over time.