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Material ID changing and/or creating

Hi Epic team,

I hope you're well, currently we have some issues with reimport option for our FBX in Unreal 4.20.2.

We our level artist reimport a mesh, sometimes the engine create new ID material or shuffle the order. We check on UDN and Unreal forum, our meshes are combine and we never have this issue before the 4.20.

Here's a quick video with idea material different between the material section and the LOD section. I know it's normal it could be different, but the material section just merge 2 ID. Sometimes, it create a new one, and for example as you can see in the video we have currently 9 ID for only 5 on the mesh.

We check on internet, we see that Unreal get this issue in the 4.14 and we check and their is no bug fix in 4.20.1/.2/.3.

Is it something you allready know? It never happen with new mesh, only on reimport.

Have a nice day and thanks for your support.

Product Version: UE 4.20
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asked Oct 29 '18 at 09:37 PM in Bug Reports

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CCimbaro
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avatar image CCimbaro Oct 29 '18 at 09:37 PM

Unfortunately, I can't upload video because of 25MB...

avatar image Jeff A ♦♦ STAFF Nov 05 '18 at 02:52 PM

Hello,

We've recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://epicsupport.force.com/unrealengine/s/

Thanks

avatar image CCimbaro Nov 15 '18 at 05:59 PM

I see it : https://issues.unrealengine.com/issue/UE-64028

it seems to be, related to our bug.

Do you know if we can get the change list number to know exactly when the fixed was push?

Have a nice day,

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I see it : https://issues.unrealengine.com/issue/UE-64028

it seems to be, related to our bug.

Do you know if we can get the change list number to know exactly when the fixed was push?

Have a nice day,

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answered Nov 09 '18 at 05:53 PM

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CCimbaro
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