When scanning using the MF Scan utility, you can go into the save settings and you can select the option to check the scan results. When that is selected, you can choose the file name and the save location once the scan is complete. You can view the manual for the MF Scan utility using the link HERE.
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I did the preview thing and still, my file name has extra things added to it. I named the file: 0-DRN-385398-1.pdf, but the name it was given is 0-DRN-385398-1_20211022_0001.pdf. Imagine scanning in all the documents needed for a 40-year land record search and having to rename all those Deeds, Deeds of Trusts, Easements, and Plats. I told the program what to name the file. There is no option to uncheck adding the date and a four-digit number to the end. A program should not add to a file name without the option to turn it off.
A quote from the manual you linked to:
07/31/2023: New firmware updates are available.
05/31/2023: New firmware updates are available.
05/18/2023: New firmware updates are available.
04/20/2023: New firmware version 1.4.1 is available for EOS R3
03/30/2023: New firmware updates are available.
2/07/2023: New product announcements!EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM