Switching from maxystore 1.5 to opencart 2.3?

Question

Search Engine Optimization

Hello.
I'm moving a site from maxystore 1.5 to opencart 2.3. The directory structure changes slightly. On the old site, seo was poorly configured, in connection with this I change the seo url. Now the site is in the first places in search queries in the region. How quickly will positions in search engines be restored? What to do with transitions from a search engine to a non-existent page? Transition recommendations?
Thank you.

Answer 1

Set up 301 redirects from old URLs to new ones. If there are many pages in the index, look at the most popular entry pages from Yandex through Yandex.Metrica or Analytics and set up at least for them.