No worries. For the record, you are not one of the "memorable counter-examples" I was referring to. There's a couple folks who have planted way, way harder against giving us necessary info.
Damn, I can't believe I called it.
Yes, to 14 occurrences question. The date and time stamp are of great value here, if the clock on your car was set correctly. That's almost certain proof the fault was present immediately after the flash update, before you even collected the car. The mileage will be further confirmation, even more certain. Check your paperwork. It's normal practice here for service advisors to log the car's mileage when taken in, and it's probably on your receipt. If that mileage is equal to, or very nearly so, the mileage your dealer logged at intake, that's proof it faulted immediately and they marked the service action complete without a road test.
This is the proof you needed. If it was VW Australia policy to pay for servicing the transmission if the fault pops up immediately after the update, you will win this fight. Preserve that and freeze-frame. Do NOT use the "clear codes" function in for any reason. Limit vehicle starts/ignition cycles if you can. If you leave the car sitting, keep it on a battery tender, don't let the battery go flat.
Best of luck!