I have migrated my website to Magento 2 and after a few Google searches to determine why my categories were not showing in the main menu, I found several blogs explaining that you have to create a new default category and then copy the products over.
As simple as it sounds, I would like to make sure I am not going to create an issue for us with links already listed in Google and other search engines.
Do I just create a new category and then move all of the existing categories under the new one? Also, after I do this, will it add an additional category in the link? I don't want to lose backlinks that we have built for the past 7 years.