This is known as "lurking in the forum". . .but I am not new to this forum as I have been continously browsing the contents of this forum from last 2 years
If the file is opened as output and the DISP was OLD, the existing records would be over-written - they would no longer exist after the OPEN OUTPUT. Having said that, i believe it is cleaner to delete/free/re-allocate. . .I first want to delete the exisiting file as I dont need the old records of that file.