Best way to upgrade Time Machine volume to APFS and preserve backups?

time-machine backup catalina apfs

You cannot preserve the backups while upgrading the disk to APFS. The structure of the backups are fundamentally different and incompatible.

Related

Can I get MacOS to treat an external drive like a normal volume?
Show month calendar in date time dropdown in OSX?
Meaning of '"Applications" would like to receive keystrokes from any application'
How to duplicate a remote session in Terminal?
Whenever i type a number on imessage, it keeps saying “This is number is not registred in imessage. What does it mean? I cant message anyone else
Is there any free clipboard manager like Ditto for Mac? [duplicate]
Access Applications directory with Terminal in Recovery Mode
iPhone 12 mini iOS 14.7.1 (activation lock) [duplicate]
2017 Macbook Pro + TCL 4K Display = No 60Hz
Space switching keyboard shortcut behaviour on multiple displays
Running terminal commands on startup/login
Recommended way of getting data from the server