Restoring from a backup that contains multiple log files is not supported in SQL Database Managed Instance.

Azure Database Migration Service doesn't support databases with multiple log files it is a known issue.

NO, you can't bypass transactional log .bak file. Transaction log is an integral part of the backup. If you have numerous log files, you can shrink and restructure them to create a single transaction log file. Because you cannot remote to non-empty log files, you must first back them up.

To resolve this issue, you need to first SHRINK the transactional log before you take backup from .bak file.

For more detailed information plese refer this document by @Ganeshan K.