Block Object Ids order are modified when use command Insert as block

Rhino Developer
,
1

Hi,

I saw a change in the behaviour in Rhino 8 >= SR12.

I’m inserting a 3dm file as a block.
I insert 3 different files and when I repeat the insert for the first one, the order of the object ids is modified and the “last object” now is the “first one”.

Command: -_Insert
Name of block to insert ( File=No ): "Block_Pave_Black.3dm"
Insert as <Block> ( Block  Group  Objects ): _Block
Insertion point ( Rotate  Scale ): 0,0,0
Scale factor <1.000> ( ReferencePoint  XYZ  Rotate ): 1
Rotation angle <0.000> ( AxisAlign  ReferencePoint ): 0

Object Id: c53e387d-9daa-4a35-a363-2c54315e164e (THIS OBJECT END UP AS FIRST OBJECT)


Command: -_Insert
Name of block to insert ( File=No ): "Block_Pave_Orange.3dm"
Insert as <Block> ( Block  Group  Objects ): _Block
Insertion point ( Rotate  Scale ): 0,0,0
Scale factor <1.000> ( ReferencePoint  XYZ  Rotate ): 1
Rotation angle <0.000> ( AxisAlign  ReferencePoint ): 0

Object Id: 993e11e0-55a8-4fef-aedc-367f2e72e8ca
Object Id: c53e387d-9daa-4a35-a363-2c54315e164e


Command: -_Insert
Name of block to insert ( File=No ): "Block_Pave_Purple.3dm"
Insert as <Block> ( Block  Group  Objects ): _Block
Insertion point ( Rotate  Scale ): 0,0,0
Scale factor <1.000> ( ReferencePoint  XYZ  Rotate ): 1
Rotation angle <0.000> ( AxisAlign  ReferencePoint ): 0

Object Id: b5f4bbd8-8002-4b3c-976d-6b1e43490adc
Object Id: 993e11e0-55a8-4fef-aedc-367f2e72e8ca
Object Id: c53e387d-9daa-4a35-a363-2c54315e164e (HERE IS STILL THE LAST OBJECT AS IT IS EXPECTED)


Command: -_Insert
Name of block to insert ( File=No ): "Block_Pave_Black.3dm"
Insert as <Block> ( Block  Group  Objects ): _Block
Insertion point ( Rotate  Scale ): 0,0,0
Scale factor <1.000> ( ReferencePoint  XYZ  Rotate ): 1
Rotation angle <0.000> ( AxisAlign  ReferencePoint ): 0

Object Id: c53e387d-9daa-4a35-a363-2c54315e164e (HERE BECOME THE FIRST ONE)
Object Id: 49ccc9a1-1ba7-4edd-893c-049df24d73e4
Object Id: b5f4bbd8-8002-4b3c-976d-6b1e43490adc
Object Id: 993e11e0-55a8-4fef-aedc-367f2e72e8ca

I’m using this little script to print the ids in order:

Sub PrintAllObjectIds()
	Dim currentObjectId
	currentObjectId = Rhino.FirstObject()
	While currentObjectId <> ""
		Rhino.Print currentObjectId				
		currentObjectId = Rhino.NextObject(currentObjectId)		
	Wend
End Sub

Is this change in behaviour, expected? It is breaking my plugin.

Best regards,
Jordi