The use of an evacuated hospital

On the 2nd, CNN reported on an Israeli raid on a Lebanese hospital being used as a Hezbollah post:

Israel's military released video Wednesday that it said proved a hospital it raided overnight in Lebanon was a Hezbollah headquarters. Hezbollah disputed the account.
Israeli special forces raided the hospital near Baalbeck, snatching five militants and killing 10 others, Israel's army said.
Hezbollah, however, said Israel arrested five civilians who were not members of the Islamic militia.
Israeli video of the scene appeared to show weapons that Israeli soldiers discovered during a search of the hospital...

There's one thing wrong with the Hezbollah denial above: it was apparently contradicted by an earlier Hezbollah claim. From the 1st:

Hezbollah denied the claim, saying “the citizens kidnapped in Baalbek are normal civilians”. A statement broadcast by Hezbollah’s Al Manar television said: “The Resistance announces that it has foiled an Israeli landing operation in Baalbek and denies that the enemy has captured any of its members.”
A Hezbollah spokesman had earlier said that Israeli troops were surrounded after attacking Dar Al Hikmeh Hospital, which is run by the rebel group, about two kilometres southwest of Baalbek.
The spokesman said all patients had been evacuated from the hospital on July 12, when Hezbollah fighters captured two Israeli soldiers in a cross-border raid.

If all patients were evacuated weeks ago, what was the hospital being used for?