Enhanced Syncing problem

I just tried again and this time the changes did sync to my secondary computer. And syncing from secondary computer also syncs properly.

I did some highlighting on my main computer and then performed Enhanced Sync. It displayed a progress box. When complete I went to my secondary computer and selected Enhanced Sync and a progress box appeared but when I went to the verses I'd just highlighted they did not show on my secondary computer.

This is the first time I've use Enhanced Sync but expected those highlights to be copied over but weren't

Both computers running Accordance 14.1.2 on MacBooks.