Sync not removing folders / files at destination

I am using rclone sync but some files that exist at the destination (but not the source) are not being deleted.

As an example of a command....

rclone sync e:\myfolder Backblaze:MyBucket --progress --ignore-case --ignore-errors

For example, the folder e:\myfolder\notneeded has been removed at the source, but remains in the destination after I run the command above. The folder at the destination has files in it.

Any idea on what is happening here?

RClone 1.50.2, Windows 10/64 bit.

Thank you.

Run the command with "-vv" and share the log with the issue.