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Multimap Exporter - Texture from Polypaint is distorted

Hello dear Zbrush friends, I need some help. I painted a map on my high res mesh with UVs and tried to export it with the Multi Map Exporter, but the exported map is distorted on one side. I have no idea what is happening.
polypaint

exported_map
When I export it via → Texture Map → New from Polypaint → Clone Txtr and then click on the right side on the Texture → Export, everything is fine