Why does replace component change refdes

[GregW]

Why does MS change the refdes of a part when the replace component command is used?

Here is an example. Say I have a schematic that has R1-R20 on it.  All parts are from the User DB and have part number, vendor info, etc.    Later I decided to remove R1.  Then I decide to use the replace component on R8 with a different resistor from the user DB.   MS now decides to change the RefDes to R1.

It doesn't do it all the time and I haven't been able to isolate when it seems to happen.

This is a major pain when the design has already been exported to UB and routed.

Is this a known bug?  Is it considered a bug or a feature?  Is there a way to disable this renaming?

Thanks,

[_user32]

GregW ,

Which version are you on?   This shouldn't be happening for single section components- if it is it is a bug.   For multisection components you should be prompted since an existing portion of the part may already be in use.

In the v10.1 a replace of a single section component does not seem to change the refdes.   If it is happening can you send the file directly to me (or at least a representative file tjat shows the issue) so to allow us to reproduce this issue.   You can also file a customer support request.

Regards,

Patrick Noonan
Business Development Manager
National Instruments - Electronics Workbench Group
50 Market St. 1-A
S. Portland, ME 04106
Email: patrick.noonan@ni.com
Tel. (207) 892-9130
Fax. (207) 892-9508