2 levels within Mīmāṃsā

As argued in my previous post about pramāṇa, I think that there are two levels in Mīmāṃsā: an older, exegetical level and a newer philosophically engaged one. The older may list different kinds of prescriptions and explain that the prayogavidhi is the one which enjoins an act, the newer explains that one enjoins an act because it is one duty/because it is the mean to attain something desired/… Not necessarily do the two harmonize and it is interesting to see how Mīmāṃsā philosophers managed to reduce contradictions. See, about the above-mentioned enjoinment issue, Vācaspati's commentary on Maṇḍana's Vidhiviveka.