Changes in Preheat Temps in Firmware

Howdy, all! Hoping I can get a pointer as to how to proceed. I have been running the Marlin RC2 firmware successfully for a couple of months. I have customized some of the settings prior to this point, all with no issue. However, I have run into an issue recently that has me stumped. I noticed that the default ABS preheat temps are 240 deg for the hot end and 110 deg for the bed. I found the relevant (I think) section in the configuration.h file and edited the ABS Preheat values as follows:

// Preheat Constants
#define PLA_PREHEAT_HOTEND_TEMP 190 //--ROBO-BH
#define PLA_PREHEAT_HPB_TEMP 70
#define PLA_PREHEAT_FAN_SPEED 255 //--ROBO-BH Insert Value between 0 and 255

#define ABS_PREHEAT_HOTEND_TEMP 210
#define ABS_PREHEAT_HPB_TEMP 80
#define ABS_PREHEAT_FAN_SPEED 0 // Insert Value between 0 and 255

I successfully save, verify and load with no errors. However, when I select Preheat ABS the temp set points are the default 240 and 110. I have tried it multiple times, I have powered down and up, and unplugged the printer to try and get the new values to work. Does anybody have any idea what is going on and what I can do to get my values to become the new settings? Thank you for your time and consideration.

 

Are you doing the "Preheat ABS" from the LCD or from software?