GM6 transmission shift adaptations reset with ISTA?

[E-series ftw]

Using ISTA on my '08 X5, I can reset the shift adaptations for the transmission, but despite both vehicles using the same GM6 transmission, the option is not available when I'm connected to my '07 X3. Is there different a way to reset the shift adaptations? Is it somewhere else in ISTA?
I'm finding it's hanging onto gears longer. I am due for a fluid replacement, but was hoping to reset the shift adapts as well.