Has anyone successfully uploaded/used pre-2021 term base files to/in Trados/MultiTerm 2021?

I just purchased Trados for the first time, and it is Studio & MultiTerm 2021. I tried to use a Microsoft Terminology Collection with it, it's not compatible because it's from 2019. Tried some others, everything from 2019 is not compatible. Has anyone else had this problem or solved it?