Databricks itself does not deliver semantic models like SSAS cubes.  So Databricks cannot migrate them because there is nothing to migrate to.
However, there are some options:
- use of PowerBI instead of SSAS (there might even be a migrate option?).  We use it all the time for cubes (also in excel!)

- use of another semantic layer model like AtScale and Stardog (both in the Partner Connect) or others.

I'd go for a powerBi scenario because it also uses DAX, which you are probably familiar with.