Color selections of assemblies do not save when pasted to new libray.

We maintain 2 copies for each of our libraries, one live for our employees to perform takeoffs, and one master file in case they accidently alter the library. When we make changes/updates, then copy and paste one library to another, the colors we have chosen to code our assemblies does not save, it randomly applies a new color. This creates a lot of extra work to reset several hundred assemblies each time and potentially causes confusion for our clients if our established colors appear different (this has been a service they highly value, the consistency of our colored takeoffs).

Thanks for your help,

Mike