Replace One Block With Another

[christianbaileypaulsen1]

Lately ive been having this problem a lot as my company is switching our old standard of drawing to a new one. If i had a block thats just a circle and its all over my drawing, but i need to replace it with a block thats just a square. Is there a way to do this without having to delete all the circles and manually put in the squares everywhere. I know that i could just go into block editor and change the circle to a square, but my blocks are a bit more complicated than this, i just used the circle and square as an example. The new block is the same as the old block, it just has a few more attributes to fill in our data extractions.  Thank you.

[Libbya]

Yes, there are several ways.  As you mentioned, you can edit the block in block editor and the changes will be global for the drawing.  You can also create the block in another file, save the block as a block file, insert the block file and choose "redefine" during the insertion process.  The existing blocks will be redefined with the new block definition.  Redefine is also available on the right-click of a tool palette block insertion tool.  

[Libbya]

Be aware that during the redefine process changes to attributes may cause loss of attribute values.  You will also need to run the attsync command if the block definition included attribute definition changes.