There is an update to Catalina available today.
Only update to the new system update, if you have a full back up. If you are in the middle of an important Project – wait until that is finished.
if you have updated to Final Cut 10.4.10 then make sure you update to the Pro Video Formats 2.1.3 via the System Update.
This is what is in Pro Video Formats 2.1.3
The Pro Video Formats package provides support for the following codecs that are used in professional video workflows:
Apple ProRes RAW and ProRes RAW HQ*
Apple Intermediate Codec
AVC-Intra 50 / 100 / 200 / 4:4:4 / LT
AVC-LongG
XAVC
XF-AVC
XF-HEVC
DVCPRO HD
HDV
XDCAM EX / HD / HD422
MPEG IMX
Uncompressed 4:2:2