I'm migrating a busy web-shop (10'000 IPs/day) to OpenCart, manually copying all the products, tags, descriptions and architecture.
The old website was not built following semantics standards, no
h1 tags, alt tags are not filled, etc.
In the new website this is fixed. The text content doesn't change much.
The issue: The URLs on the current website look like this:
The old CMS added the
-p to all of the categories. On the new website, the links look like this:
What steps (perhaps some checklist) should I take, not to be penalized by Google once I update to OpenCart and re-register the sitemap?