IF (USR_*) config=(??) in condition.mcc to use specia if parameters exist which begins with USR_

It would be helpful if there was a way to call a special check profile in the condition.mcc whenever the model contains one or more parameters that begin with "USR_". This would, for example, prevent extra parameters from being deleted in ModelCHECK whenever a parameter that begins with USR_ is present. Or is there another way to delete all parameters in a model except those beginning with "USR_" or "CONF_"? This would, for example, help bring old data up to date.
Here two  examples:
IF (CONF_*) config=(check/mat.mch)(check/kon.mch)(start/mat_mm.mcs)(start/kon_mm.mcs)(constant/mm.mcn)(status/status.mcq) (name/Configurator_File)

IF (USR_*) config=(check/mat.mch)(check/usr.mch)(start/mat_mm.mcs)(start/usr_mm.mcs)(constant/mm.mcn)(status/status.mcq) (name/Userparameter_File)