We need to add a flag to let the importer know ifa collision was generate by the importer or by the editor so the editor collision can be restored properly
Import the attach fbx
open the imported static mesh
add 1 sphere collision from the collision menu
reimport the static mesh
RESULT: The sphere collision is gone only the original fbx collision is there
EXPECTED: The sphere collision is restored and the original fbx collision is there
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-85520 in the post.