Installing SU4 beta 1.6.5.0 on Steam deleted my whole simulator

Sim Update 4 Beta | MSFS 2024 Install, Performance & Graphics
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I just update my SU4 beta 1.6.3.0 to 1.6.5.0 and my whole sim is gone, black screen at startup, wondered why and checked installation folder. Literally whole sim is gone, community folder wiped also, just FlightSimulator2024.exe left and some dlls. 70GBs of addons disappeared in seconds.

Windows 10

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Yikes.

MS Store version here, on PC. The update didn’t delete the install, but it did corrupt control settings and now even if I use the tried-and-true Delete Cloud Save Data to delete all user custom settings and get back to defaults, THAT doesn’t work!

This is a borked build version!

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