AutoCAD Electrical toolset uses a named source/destination concept. You identify a wire network to be the source, insert a source arrow on that network, and assign a source code name to it. On the wire network that is to be a continuation of the same wire number, whether on the same drawing or a different drawing in the project, insert a destination arrow. Give it the same code name that you gave to its source. AutoCAD Electrical toolset matches source code names with destination names and copies source wire numbers over to the destination wire networks.
When you update the signal code in one of the source arrows, the source and destination arrows with the same signal code in any drawing will be updated.
