Reimporting static mesh gets rid of custom collision data.

Development Asset Creation
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Hi all. I’m having an issue with losing my custom collisions when reimporting a static mesh asset. I started by making a little janky hot-air balloon in Blender, exported as a .obj, imported into UE5, and then made my own custom collision for the basket and the balloon (using capsules, box, and sphere) as simple collisions. Saved, tested, and all was going well. Then I needed to make some changes, so I did. When I reimported (with the right-click, Imported Asset “Reimport”) all the custom collision data was gone. I tried reimporting with different settings and couldn’t get it to save the custom collisions I made in any way.

tl;dr reimporting my asset makes my custom collisions disappear, and I’d like that not to happen.

Any and all help is GREATLY appreciated! Thanks for your time.

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I just ran into the same issue. Uncheck “Generate Missing Collision” checkbox on the static mesh asset details panel. Then it won’t regenerate collision on reimport.

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This does look like a bug however. Because once you customize collision it should not overwrite that automatically unless explicitly instructed to do so.

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