I am curious when Outlook for Mac is actually going to be able to access/use the cloud based 'Your Contact Lists' from OWA (M365). We use Outlook for Mac with 95% of our users using Apple hardware (Mac, iPad, etc.) and none of them can currently use Contact Lists created locally with the Web nor created on the Web locally. Additionally, if a user has to swap hardware (i.e. has a machine replaced), any Contact Lists they have are lost - and there is no good way to migrate those to any new system even if they have the foresight to export those lists (the import process on a new machine rarely imports things back correctly without corruption). This is a significant hardship for our users - and would love to see if fixed ASAP.
NOTE: If you enable the 'New Outlook' features (as of April 2021), it will actually make it impossible for users to use the existing Contact Lists they have created and used in the past locally on their machines because it does not even give you the option to see 'On My Computer' data. It is like checking the Preferences > General > Hide On My Computer folders option on for all users. Our users HATE the new version for this reason alone, they lose access to things they use everyday.