P: Export image with legacy masking present fails edits fail to appear on resultant file

I am having the same problem. Some of edits are exported while others like defringe brsh stroke will not. and the coloring is off. Ive tried to use the work around and it is not working. I have version 5.1

Lightroom version: 5.1 MAS x64 [ 20211204-1710-0e71941 ] (Dec 4 2021)
NGL Version: 1.28.0.8
WF Version: 4.0 0d53932
VF Version: 0.1.36.2
HIL Version: 40400
Operating system: macOS
OS Version: macOS 11.5.2 (20G95)
Application architecture: x64
Computer model: MacBookPro16,1 / Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
Logical processor count: 16
Processor speed: 2.3 GHz
Built-in memory: 16,384.0 MB
Real memory available to Lightroom: 16,384.0 MB
Real memory used by Lightroom: 320.6 MB (1.9%)
Virtual memory used by Lightroom: 30,109.4 MB
Memory cache size: 1,063.5 MB
Internal Camera Raw version: 14.1 [ 993 ]
Maximum thread count used by Camera Raw: 9
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 979MB / 8191MB (11%)
Camera Raw real memory: 0MB / 16384MB (0%)
Displays: 1) 3584x2240

Graphics Processor Info: Metal: AMD Radeon Pro 5500M - 4 GB
Graphics Processor Detail: loaded: Yes, supported: Yes, compute: Yes, init: I4_GPU3, hard: success, soft: success, al: Yes, dl: No
OS Media Capability: true

This is also happening to me. 

The work-around posted by Rikk Flohr works.
I opneed an affected photo, adjusted the exposure, went back to All Photos, then re-opened that same photo and adjusted the exposure back to what it was, then synced the photo again.  After that, I was able to export OK.  Seems like a lot of hassel but it worked.  Also before finding this post, I downgraded back to version 4.4 and was able to export my photos OK.

Where do we find version 5.4.2?
My creatve cloud app only shows version 4.4 and 5.0 as availble to install.

Yes that is what I had to do with an ENTIRE Photoshoot... took 2 days! It's ok now that I'm editing a new photoshoot with the update but the one I was in the middle of editing while the update happened was not fun! 

With the latest update of Lightroom CC I am unable to export the edited version of my photos as a Jpg. When I choose Jpg as the export format it is previewing and exporting the Original, unedited, version of my ohoto. If I change the export setting to Original it is then previewing the edited version of the photo. I have force quit the program, shut down and restarted my computer - I have tried everything that I can think of to resolve this. Does anyone have any input or advice on how to fix this or what may be causing it?

Updating status

Hi, I am having the same issue. I am only loosing my "Masking" edits when exporting though. 

After shutting my computer down for the rest of the day yesterday (out of frustration) it seemed to resolve itself. I didn't change any settings or anything. I've had odd things like this happen randomly to me in lightroom 😞