There is also another way to check drawings. Via link.
If not, you can also access the edit page, via the link stated below.
This link can be quite helpful as well especially deleted drawings that cannot be found under your diagram. Keep this for future references.
You'll be asked to enter the building's ID. Hover your mouse over your illustration, and there will be a yellow pop up - featuring your ID in it.
You can access this page - where all your pass deleted drawings are kept in archive.