Sd card as internal storage

In nokia 7.2 sd card(256gb strontium Nitro) as internal storage migration of data is very worst idea. Please develop the cancel option for cancelling the data while migration. ALL MY FILES ARE CORRUPTED AFTER MIGRATION I CANNOT ABLE TO OPEN ANY FILES🚫 if sd card changed to internal storage it will automatically tells to migrate the Data!!

What kind of migration is these ???

Whether the migrated data is still available in phone shall we able to recover?

For migration u have

applied any encryption technique to store in sd card why the files are not opening!!

Each and every corrupted data(almost 30gb) is valuable so please help me !!