XREFREGAPPCTL (System Variable)

Controls whether the registered application (RegApp) records stored in an xref being loaded are copied to the host drawing.

Type:	Integer
Saved in:	Registry
Initial value:	0

Value	Description
0	Legacy behavior. All regapp records are copied to the host drawing.
1	Current behavior. Only the necessary regapp records are copied to the host drawing, which usually results in none being copied.

Note: The XREFREGAPPCTL system variable only applies to DWG xrefs, not to other external references such as underlays.