Different between 'SDP Transitional Element' and "Transitional Element'

I have been migrated to UC in the past couple of months, and was ESA which has included SDP for years prior. It appears to be reflects in the overall sum of my Transitional Protection award.

This isn't stated anywhere as 'SDP Tranistional Element' though specifically, and I am not sure whether this is distinct?

I'm still trying to determine aspects of my claim and calculation, and am concerned at putting this at risk if it has different rules or regs like backdating or moving house, etc.

Apologies I was getting myself confused with where I was asking the question, mental health all over the shop with UC issues...