Restructured ecommerce website ranks for awhile, then disappears

[raviseomaestro]

I am working on an e-commerce website and it was ranking well. I added new products to the website and the ranks started improving for product pages. But, the homepage and category pages started dropping. Now we have changed our URL structure, revamped the website, added new products and submitted the sitemap and all the individual URLs through search console (Fetch URL). The ranks appear for few hours when we submit our URL through "Fetch URL" option in search console and then slowly disappears. What could be the reason?

Can anyone help me to fix this issue?

[NeapTide]

URLs should not be changed unless you 301 redirect them to new URLs.

[raviseomaestro]

URLs have not changed. Where ever the changes are there we have done a 301 redirections.

[tangor]

When you change url structure (what does that mean?) you are changing things. When that happens, without 301s, some loss is to be expected.

Most times if things are not broke then don't fix them. :)

Is this loss site wide or only for the pages that have changed?

[not2easy]

It has been answered that any URL changes were 301 redirected so that isn't the problem assuming that the redirects work as expected and return a 301 response.

I am more curious about what is meant by

The ranks appear for few hours when we submit our URL through "Fetch URL" option in search console and then slowly disappears.

Where are you seeing the rank appear and then slowly disappear?

Side note - It is my understanding that the "Fetch as Googlebot" tool is not meant for submitting URLs, it is to let you see your site as Google's bots (Desktop and Mobile) see your pages. It can also point out any resources that are being blocked. To submit new URLs, update the sitemap and then submit the new sitemap. Submitting a new sitemap can get new URLs crawled fairly quickly in my experience and get them to stop using (for awhile anyway) an old cached sitemap. Using the "Fetch" tool does not mean that Google has crawled that URL for indexing.