Outlook Mac - on my computer folder, problems to migrate the messages

Hello everyone,

I've tried to migrate my messages from the outlook legacy to the new version. I'm using the 16.76.2.

Unfortunately I'm facing some problems because during the migration, my disk was consumed, but the mac had a problem and restarted.

If I open the outlook again, the migration restarts from zero, but the partial migration was saved somewhere. How can I clean it and restore my free space.

Furthermore, when I'm done with the migration, how can I release space from the old outlook?

Many thanks in advance!

Diego