T-Bop,
You are correct and I mispoke (mistyped?) in regards to the impaired proof designation. A Franklin proof will not get an impaired proof designation simply because it lacks FBL.
However, it is true that you cannot get the FBL designation for any Franklin proof. I was simply trying to point out to the OP that sending his suspected proof in for grading because of the potential for an FBL designation is not a good idea.
Apologies for any confusion I may have caused.