In some exceptional cases, such as when a student has already completed a degree, had been graded on all previous course work and was waiting on the final issuance of the transcript/diploma, etc, yes, he/she will receive the 4.0-grade point average. However, if documents are lost during the fire, graduation is delayed.
Consequently, digital student copies of all the records will have to be referred to again to evaluate student performance before a 4.0 is assigned. If that is not possible either, a transfer to a new university/degree would be the last option.