Replacing a block

[Rooster]

Hi. Is it possible to re-define a block and have AutoCAD only replace the block in certain layers, leaving it intact in others? I've tried this with the layers containing blocks I want to keep as they are locked, but these are updated as well. Any suggestions? If not, can you suggest a way around this?

PS: running AutoCAD 2005

[Designer]

The only way i know is to put a different name in the block. If you try to re-define a block all the blocks that have that name will be modify.

[Rooster]

Ok, so how do I just change the name of the ones I want redefined?

[Designer]

I only know one way, that gives a lot of work explode the ones you want to change the name and make them a block again with another name. Maybe someone knows a better way and faster.

[dbroada]

if there are a lot to do I would WBLOCK the ones you want to keep to a TEMP.dwg file (removing them from my current drawing). Use the RENAME command on your remaining blocks. Insert the TEMP drawing (exploded).

[lpseifert]

Try this routine, it will replace blocks (either globally or by selection).