PAC to Holo export has messed up positions on nested parts with position offset.
When exporting a PAC like the one below to a holo, nested objects with position offsets are positioned in the wrong place. E2 Holo output: wgauges_needles.txt PAC: wgauges_needles.txt
When you load them, you can see the parts with offsets nested in other parts aren't positioned correctly.

This is probably why nested parts export wasn't implemented in the first place
The generated code does not track nor anyhow treat parented parts, so this is expected as with any missing feature.
This is the commit that added the nest part export. I'm guessing it needs to maintain a transform hierarchy as well. https://github.com/CapsAdmin/pac3/commit/4bbdf57a0014ae1d4a6799fe7b0da235da42b3d8
Relevant lines: https://github.com/CapsAdmin/pac3/blob/develop/lua/pac3/editor/client/tools.lua#L651-L654