Protect SharePoint Files when Plans are deleted.
I have been using a SharePoint Team site to store the companies files for active use and archive. I started playing around with planner today and saw a Plan with the name of the Team site. I thought it was odd and deleted it because it didn't make sense to have it as a plan and would take up space. As soon as I did that, it deleted the Team Sharepoint site and all the documents associated with the site. 30,000 documents (word, excel, powerpoint files and pdfs) from the last 8 years. No way to recover or undo. The pop-up confirmation box said that it would remove sharepoint files, but I thought that since I had not added any files from Planner that it was not a big deal. It completely removed the Sharepoint site without a second thought or warning. This needs to be made more clear, better protected, or both.
No, I think the documents were on the site underlying the Teams page - for this reason we recommend as policy that persistent documents SHOULD NOT be stored on either the Teams Page site or the Planner Site, but on a separately created SP365 Site which can be linked to those pages as required.
Only use the Teams Page Files tab for stuff that is transient and you don't mind if it goes.
Another instance of MS not thinking through integration properly.
Leigh Bedford commented
Sounds like someone was using Planner to host documents?