*Steps to reproduce:*
# Import the attached graph
# Open graph
# Select everything (CTRL/CMD + A)
# Convert to Subgraph

*Actual results:*
* Shader errors related to custom attributes are thrown.
* Some edges of custom attributes are disconnected in subgraph.
* Attribute types are not preserved in subgraph; upon conversion, they all change to the float type.
* After conversion, the graph from which it was converted should indicate that these attributes now belong to the subgraph and cannot be deleted or edited (?)

*Reproducible with versions:* 6000.0.33f1, 6000.2.0a4

*Not reproducible with versions:* n/a

*Can’t test with versions:* n/a

*Tested on (OS):* Windows

*Notes:*
* Shader error in '[OrientFixedAxis] [Feathers] Update Particle': undeclared identifier '_Open' at kernel CSMain at OrientFixedAxis.vfx(185) (on d3d11)
* [OrientFixedAxis] [Feathers] Initialize Particle.compute: Kernel at index (0) is invalid