Remember when Max used to allow you to weld vertices that were on top of one another? So if you had a mirror part, you could weld the mirrors vertices on top of the otherside versus just having the vertices in the same place. Why you ask? Because when I drag things around or use the packing ability in max, it just makes…
It can easily be done as a script (or at least synchronizing the vert positions can be). The problem is processing the data quickly. Maxscript is not a fast language, and iterating over and matching the positions of thousands / tens of thousands of vertices could take a long time. Anyhow, here's a simple/unoptimized script…