Orphaned Views in Doc Map

So working on a doc I’m trying to recreate a Quicken type register. It was working. I went to make some changes and nothing would work right. Doc just kept popping up with “Wait” or “Exit” popup.

I started abandoning columns and recreating them from scratch thinking there was some corruption. I deleted rows some contained Canvas columns.

Now I find that there are over 400 Views of one table that are all “abandoned”. The only way I can find to remove these views is clicking each one in the Doc Map and then clicking “delete abandoned view”.

Anyone know what caused this fiasco and how to prevent it in the future?

My table only had like 30 rows. So how it came up with OVER 400 items that are abandoned I have no idea. Many of them are duplicate named like Split 1, Split 1 1.