This release consolidates the "singlesig" and "multisig" backup options into one option called "Backup Wallet".
As a result, backups must be initiated from a descriptor or XPUB. To backup directly from 12 or 24 words (without the XPUB or descriptor at hand) are no longer possible. Remember the XPUB can always be derived from the 12 or 24 words with eg. a SeedSigner.