Hello Frank,
Yes, for SIT to be able to recognize changes in the bit file and change the driver VI, you must rebuild the driver VI. It cannot adjust to changes in the bitfile otherwise, the driver VI does not change unless you tell it to change, there would be substantial troubles if it did.
As for why some of the entries are grey, color indicates datatype. As you can see your blue values in this case are I16. What datatype did you define for the other data?
Regards,
Angela M
Product Support Engineer
