Comment 23 for bug 1945368

John,

Add-on's (Note, only using internal calendar, never used any ext calendar)

Signature Switch, Quote Colors, Remove Duplicate Messages

OS: Win 10 21H1 (up-to-date)

"Home" calendar is listed but all contents are blank after upgrade. Can't export calendar.

Tried the upgrade again (restored profile from backup/reinstalled TB 78). Same issue

Restored profile from TB 78, exported calendar.

In TB 91 deleted Home cal, imported calendar as new name (would not let me use Home)

I did not create a new profile or calendar and try to upgrade using that as the TB 78 profile and calendar were fully functional and I needed all the data

Richard