"the manager over at the DMV told me it was alright to carry with a KY license."
That's nice of them, and they may be right, but that won't keep you out of jail if the manager is wrong.
There are 2 important questions for you:
1) Does TN honor a KY concealed carry license? (pretty sure they do, but check one of the aforementioned sites to be sure).
2) Does KY continue to recognize your concealed carry licensce now that you are a non-resident?
When I moved TN to NC, I emailed the attorney general to find out if I could keep my TN permit. It only took 8 weeks to get a response (it is the goverment ya know), who told me they would honor the TN permit, the question was if TN would still honor it since I was no longer a resident.
I ended up just getting the NC CC permit just to be safe, and ease handgun purchases since NC CCP holders don't need a pistol permit for each pistol (Don't even get me started on that
)
I vaguely remember reading somewhere about someone with a permit who moved to TN, maybe from AR, and paid the "renewal fee" and got a TN permit without going through class and full application process. Don't quote me on that one though...