Replaces all instances of a specified block with a different block.
BLOCKREPLACE searches the entire drawing for a specified block and replaces it with another block that you specify. Afterwards, you can use the PURGE command to remove the unreferenced block definition from the drawing.
Specify the block name to search for by selecting it in the list or by clicking the Pick button and selecting a block in the drawing:
Specify the replacement block:
See also the BLOCKTOXREF Express Tool.
blocktoxref.lsp