Printer printing wrong g code file
After many years of faithfully following my instructions my Prusa 2.5S is suddenly being rebellious. I designed a part this morning, sliced it with PrusaSlicer, and loaded it on my SD card. The printer recognizes the SD card, and my new g code appears at the top of the list of files. When I select this file to print, the printer starts printing a different file, one in the third place on the list.
I have saved the file again over the original file. I have done that again after deleting several files from the SD card. I have tried several times to start this print, once even having the printer start the second file on the list.
I am currently printing it from a new, otherwise blank, SD card, and that seems hopeful, but I wonder if there is a simpler fix.