Blender Shape Key -to- Unreal Animation "Bug?"

I’m not sure if this is me or if it’s a bug, so hopefully someone here can weigh in:

Basically, as I understand it, the way to get animations with animated shape keys from Blender into Unreal is and has been to use the Custom Properties on your mesh and animate those values into your NLA. As long as the names match, when you export to Unreal, the Custom Properties get converted into Morph Target curves. It’s really neat. But it doesn’t work for me in version 5.2!

It works fine in version 5.0… but in 5.2, it will only work if I have a single Custom Property animated. Any more than that, and it chokes and never imports. I was just wondering, is this a known bug in 5.2, or is it just because I’m still using Blender 3.6? Is anyone here currently using this method on a newer version of Unreal/Blender? If so, it may be worth my time to upgrade, since currently I need to export everything to 5.0 then migrate it!

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