Bfres vertex attribute edits don't save (Wii U)

[mctrollin]

So I want to add tangents (and bitangents) to a custom model (for botw).

• I load the bfres into smash forge
• Select the model (link) in the model list
• Right-click and choose: "Generate Tan/Bitan"
• Check in Viewport > looks right
• Select bfres in model list
• Right-click and choose: "Save"
• Save file as new *.bfres

To validate the saved file I load it right back into smash forge but the tangents / bitangents are again missing. To be sure I checked every time via "Polygone Editor" the content of the _t0 buffer for example. After reloading all values are back to zero

Then I do a file compare with winmerge: Both the original file and the saved file are identical.

[mctrollin]

Checked other edits too. For instance: copy UVs from 1 to 2 and changing the vertex colors are also not saved

[ScanMountGoat]

Is this for Wii U or Switch?

[mctrollin]

Wii U