This is a follow-up to my previous question here - Lost radio communication after take-off in IMC - what are my options?. Please refer to that to understand the scenario of this question.
If, for e.g, at one point during the flight, I see a minimum en-route of 9000' and so I climb up to 9000' from 8000'. Now, if the next segment has a minimum en-route altitude of 3000', shall I go back to my previously held altitude of 8000' (which became my assigned altitude before and is now the maximum amongst all the other available altitudes) or shall I maintain 9000' and consider it to be my "new" assigned altitude?
Apart from a regulatory perspective, I'd also like if someone could weigh-in on practical perspective - would it be better in terms of traffic separation for ATC, etc.
So the question really is - is it practical to descend, or do the regulations want you to descend and hence ATC does not expect you to descend?
I've had different answers to this particular question from different Flight Instructors, and hence looking for a definite answer.