Loading old calendar from an old profiel

My old Win 11 laptop died. So, since I had an SDD adapter, I removed SDD drive from the old laptop and connected it to my new laptop. - I had already set Thunderbird on the new laptop so I have an existing profile. - I was able, using the Import tool, to get my address book successfully transferred from the old profile. - And while the old calendar name appears in calendar pane, I don't see any of my appointments. - I tried create placeholder calendar, then deleting all the other calendars and retried but still no luck. I don't want to just copy and paste all the contents from old profile into the new profile as I don't need my old emails or email account data. So, what should I do? Thanks for any help in advance