The verdict in three sentences
Rebuilding a site without an SEO plan is the number-one cause of a sudden traffic drop: -20 to -60 % organic visits are possible if URLs change without redirects. In 2026, SEO migration support costs the equivalent of 300,000 to 900,000 FCFA depending on site size, a tiny investment against the revenue at stake. The method fits into a checklist: mapping, 301 redirects, preserving tags, before/after crawl and a 90-day Search Console watch.
The 2026 SEO migration checklist
Each step of this checklist prevents a specific traffic loss. Skipping them means betting your rankings on luck.
| Step | Concrete action | Risk avoided |
|---|---|---|
| 1. Before crawl | Extract all URLs (Screaming Frog) | Forgotten pages |
| 2. URL mapping | 1:1 old -> new table | Missing redirects |
| 3. 301 redirects | All URLs + media | -40 to -60 % traffic |
| 4. Meta / heading tags | Carried over identically | Position regressions |
| 5. Structured data | Re-implement JSON-LD | Lost rich snippets |
| 6. XML sitemap | Regenerate + submit to GSC | Slow indexing |
| 7. After crawl | Check 200 / 301 everywhere | Invisible 404s |
| 8. 90-day watch | Search Console + rankings | Undetected drift |
The most critical point is the mapping table: every indexed old URL must have a destination. You build it from the before crawl and Search Console data to miss nothing, especially high-traffic pages.
Costing the risk and the support
The cost of SEO support is trivial compared with the revenue loss from a botched rebuild. 2026 orders of magnitude.
| Site size | SEO support (FCFA equiv.) | Potential loss if botched | Watch period |
|---|---|---|---|
| Brochure (< 30 pages) | 300,000 - 450,000 | -20 to -35 % traffic | 60 days |
| Mid-size (30-100 p.) | 450,000 - 650,000 | -30 to -50 % traffic | 90 days |
| E-commerce (100-500 p.) | 650,000 - 900,000 | -40 to -60 % traffic | 90 days |
| Media / dense catalogue | 800,000 - 900,000+ | -50 to -60 % traffic | 120 days |
For an e-commerce site earning 5,000,000 FCFA/month via organic, a 50 % loss means 2,500,000 FCFA/month gone. Support at 800,000 FCFA pays for itself in under two weeks of preserved traffic.
The 90-day Search Console watch
Migration does not end at go-live. Google takes several weeks to recrawl and reindex. A close watch detects and fixes any drift before it settles in.
| Window | Check | Action if anomaly |
|---|---|---|
| D+1 to D+7 | GSC coverage, 404s | Fix redirects |
| D+7 to D+30 | Key rankings, impressions | Restore tags |
| D+30 to D+90 | Traffic vs baseline | Reinforce content / links |
Mini case study
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Ami, an e-commerce owner in Singapore, is rebuilding her fashion store which generates the equivalent of 4,200,000 FCFA/month in organic. She fears the drop. SEO support is quoted at 720,000 FCFA: before crawl, mapping of 340 URLs, complete 301s, re-implemented JSON-LD, 90-day watch. Result: instead of a 45 % loss (~1,900,000 FCFA/month gone), traffic dips only 4 % in week one, returns to normal by D+30, with +6 % by D+90 thanks to the new site's speed. The investment pays back within the first week of saved traffic.
FAQ
Why does a rebuild lose traffic?
Because changing URLs without a 301 redirect breaks the link between the old Google ranking and the new pages. Without complete mapping, you can lose -40 to -60 % of organic traffic.
How much does SEO migration support cost in 2026?
Between the equivalent of 300,000 and 900,000 FCFA depending on site size. That is little against the revenue loss a botched migration can trigger.
Should I keep the same URLs?
Ideally yes. If you must change them, every old URL must 301-redirect to its equivalent. Never change URLs and structure without a validated plan.
How long before I know if the migration succeeded?
Early signals appear at D+7 in Search Console, but the reliable verdict shows at D+30 to D+90 comparing traffic to the pre-rebuild baseline.
What should I monitor in Search Console after go-live?
Coverage (404 errors), key keyword rankings, impressions and organic traffic. Any drop should trigger a check of redirects and tags.
Let's scope your project. Send us your URL count, current traffic and planned rebuild date: we will quote the SEO support and the full checklist. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
