Specific tent models become transparent when unpacked an re-packed

[InsaneGrox]

Currently if you unpack Spore_Graphics and put unmodified tribal huts in your project the Galactic Adventures prop versions of them turn mostly invisible... This only affects the following models from my testing (stored in editor_rigblocks~)
he_yurt_01.rw4
he_yurt_01_LOD1.rw4
he_yurt_01_LOD2.rw4
he_yurt_02.rw4
he_yurt_02_LOD1.rw4
he_yurt_02_LOD2.rw4
he_yurt_03.rw4
he_yurt_03_LOD1.rw4
he_yurt_03_LOD2.rw4
he_carn_01.rw4
he_carn_01_LOD1.rw4
he_carn_01_LOD2.rw4

This issue does not happen with the Tribal stage versions of these huts and the files are shared between them.
This happens both with and without GA Patch 5.1 as the embedded signiature