BLOCKTOXREF command

The BLOCKTOXREF command Replace all instances of a standard block with an xref. Unbind xrefs that are bound.

Command Access : 

Menu : Express>Blocks>Convert Block to Xref

Command Entry : BLOCKTOXREF

BLOCKTOXREF searches the entire drawing for references to a specified block name and replaces them with an xref that you specify. You can have the unreferenced block purged when done.

In BLOCKTOXREF dialog box. Select a block to replace: Table and 4 chairs. Then select: OK

In Select a Xref file. Select the Xref you want. Then select: open

Purge unreferenced items when finished? Yes/No