I was able to get it to work using "New Wallet"!
Friendly feature request to craigraw (npub1hea…g9v2):
Allow users to accomplish the same thing through the "Import Wallet" dialog by adding a Scan button next to the Load File button on the Output Descriptor row.
This will make writing directions for disaster recovery or inheritance *much* simpler.
Thanks!
-Sparrow Respector