I read a strange section of the description of Dispel in 6E1 194 and, since it's not in Errata, I assume I'm reading it wrong. It seems like it was copy/pasted from Drain or something and not edited for content in Dispel.
"Adjustment Powers: In the case of a Characteristic or power that’s been negatively Adjusted (via Drain, for example), a Dispel takes effect if it exceeds the current (Adjusted) Active Point total of the Characteristic or power. However, the character whose Characteristic or power is Dispelled must make note of the total on the Dispel dice and compare it to the Active Point total of his power as the Adjustment Power wears off. As soon as the Characteristic or power regains enough points
so that its current Active Point total exceeds the Dispel’s effect, the Characteristic or power returns to the character (at its current, Adjusted but partly recovered, level)."
First, Dispel isn't supposed to work against Characteristics. Second, Dispel is an instant power, so it shouldn't continue to affect the power (unless it's bought with Constant, which would then make it much more like Drain than is reasonable)
Let me make an example. LadyBug has Flight 40m. Someone used Drain to lower it to 30m. I have Dispel Flight and roll 32. Her flight turns off. Next round, she should be able to turn it back on, but only at 30m.
Thanks,
Corey