What I did: Opened Agenda in my iPhone iPad and iMac
What happened: Only in iPhone I have some project residue, which I have deleted way back. They decided to come back. I tried to reset iCloud too.
What I expected: To not have them.
Things that might be helpful to know (Agenda version, OS and model, etc): iPhone XR 13.4.1,
iPad Pro 11 13.41, iMac late 2013 10.15.4