Ghost Wires w/ Lightweight?

Hello,

I had a pretty complicated rack of computers which I routed about 20
wires onto in order to get the lengths and make manufacturing drawings
for the wiring harnesses.

On two of these harnesses, after routing the wires, I changed my mind
and decided to route them through different clips. No problem, made
the change, everything is good, looks correct.

Save and ship off.

However, the next time I open the model, those wires are back. Both
the old and the new wires appear, although the old wires have no color
and are the default gray. So, I fully resolve the offending 2 wire
assemblies and cables, Ctrl+Q, and everything is back to normal.
Alright, so I save again.

Upon next open, the ghost wires are back again.

Why does this happen and how do I make it go away. When I send this
to colleagues, I don't want to have to explain to them about resolving
and Ctrl+Q'ing each time they open the assembly.

Thanks,

Kevin