Hi,
Yes, I'd assume (which is NEVER a good thing but I can't actually find it in the datasheet) that all CONFIG bits are zero by default so since the HI threshold requires the BORV bit to be zero simply not setting it would be the same as specifically clearing it. Personally I'd change my CONFIG to match the new name, ie BORV_HI instead of BORV_25.

I suspect Microchip found out that the thresholds may not have been as close to 1.9V and 2.5V to warrant having the voltage as part of the the constant names so they changed it to high and low instead. Or it might have caused users to assume (see, never a good a thing) that they could set the threshold to any arbitrary voltage by simply changing 19 to 33 or whatever - I don't know.

Anyway, glad you're back up and running. I'm currently playing with a 16F1825 for the first time, what a nice, cheap little chip it is.

/Henrik.