that's becauce MIGX 2.0 (for Revo 2.2) ist still beta.
You can uninstall your old Version and download the new one by package-management.
Or you can download from Repo and upload to your packages-folder manually.
Your old TVs will stay intact.
What's working a bit different is the new autoincrementing MIGX_id field.
You will need to resave all Datasets to get the MIGX_id-field into all records.
Otherwise there will be issues on the frontend.
If you do not want to resave them all you can use the property
&placeholdersKeyField=`0`
in all your getImageList-snippet-tags