I thought you might be interested in looking at P3D files do not link to CfgVehilce / CfgModel configs when placed in Terrain Builder (but work in eden).
https://forums.bohemia.net/forums/topic/202615-p3d-files-do-not-link-to-cfgvehilce-cfgmodel-configs-when-placed-in-terrain-builder-but-work-in-eden/?do=findComment&comment=3160992
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