Just a day after 1.9.7 was released, a hotfix, labeled 1.9.7.52, was released to fix a bug impacting the A1 and A1 mini when using the AMS in Timelapse mode.
Bambu Lab asks that you stop using the previous release, which was removed, and use this one instead.
They describe the bug as follows:
V1.9.7.52 fixed the offset issue when printing with multiple colors on A1/A1 mini in Timelapse mode. In version 1.9.7.50, after the filament change GCode, spiral Z hop outside the plate is attempted which may reach the machine’s limit position, causing lost steps and resulting in offset.
As always, the full release notes and the download links can be found on the release GitHub page: https://github.com/bambulab/BambuStudio/releases/tag/v01.09.07.52