Should internal probes be dropped when using external reference?

[klapo]

The internal PT-100s from the Ultima or XT (i.e., probe1Temperature and probe2Temperature) are not being dropped when using external reference sensors.

Should the desired behavior be to drop any reference sensors that are not requested by the user in the config file? I could see potential cases where a user wouldn't use the reference sensor in the calibration but would want to keep those reference data around for later use.