No, your being advised to not to so you don't in the future confuse the source of information you are free to give out.

Having worked in a secure communications group before there is an art in knowing what can be discussed and what cannot. An important part of that is not confusing two similar sounding documents that are protected differently. They can both touch the same subject but not the same details. The danger is, you forget which is which.

So, don't muddy the waters for them unnecessarily.