You’re right it doesn’t specifically state what to do if you lose your out of state license, thank you u/witqueen for the link.

However OP, you cannot have a license in multiple states, to make the transition a tad easier on you, you’ll probably have to get a duplicate license from Florida to get license in Pennsylvania without having to take a test:

You will be required to surrender your out-of-state driver's license (valid or expired six months or less) before PennDOT can issue you a PA Driver's License. You will need to take a vision-screening test and complete Form DL-180R (PDF)

I don’t work for any DMV but I’m almost certain PA will know you have a license in another state, but because it’s a state agency, I am almost certain, it’s not a ‘thing’ of them switch(ing) it over they’re not going to make it that easy for you but I could be wrong.

If you hadn’t found it yet, it appears you can request a duplicate online:

https://www.flhsmv.gov/driver-licenses-id-cards/renew-or-replace-your-florida-driver-license-or-id-card/

Hope this helps.