If you have a security clearance, the CBI background check may be hitting on the research from the clearance background check. I have learned of this happening, raising a "red flag" and causing a delay. Amounts to an error in the program that does the automatic check for CBI/BATF.

Check with the governing authority, that may clear it up quick.

Another issue: I have witnessed folks with an ID number from BATF that speeds their background check. Seems they have had trouble because someone stole their identity, and once cleared up it still slows firearm purchases. BATF clears them and the ID number resolves things much faster. (one to three days vs. months)