I haven’t found a way to have a different source file name each time. Here’s what we’ve done as an alternative. We added a little batch file that looks for the oldest file that matches the format like you have above (GLFILE…csv), makes a copy with the name of the source file used by the integration, and moves the original file to a backup location. We call this batch file with a before map script. This gives us a source file that is the same name each time and also preserves a backup copy of the original source file. Good luck!
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