3.1.15 is live on WordPress.org.
This ship hardens cross-prefix restores when large options rows used to die as invalid data after a prefix remap. It also fails closed when an S3 part never lands, checks SQL dump and remap temp writes, and validates DROP before it runs.
Huge uploads still use ZipArchive first. If close hangs or times out, a slower monitored zip path can take over. Destination review notices stay off after a failed restore, and a prior “don’t ask again” is preserved across restores.
Update from the Plugins screen, or install from https://wordpress.org/plugins/1-click-migration/