Hello conn experts,

My issue is that i want to erase sessions of every patient, though I do not want to erase some specific sessions. 

This is, I have plenty of session, as the experiment i was trying to solve required them, but i need the results of comparison of some sessions as soon as posible, but i need to enter the data of the first level covariates of all the sassions.

The conditions I defined are not related to those session i want to erase.

In short, there are only some sessions I want to keep, but i can not erase the rest, without erasing those.

Is there any way I can erase only some speciffic sessions?

Thank you very much. This might sound trickier than it is in fact. 

Nikolas