Group summon lower lvl?

There are ALOT of factors that can affect your power at a given time and you might not be at your highest possible power.

Since introduction of tactics, where you place your ninja matters
Since introduction of 8 gates, the move order of your ninja metters
Which ninja you have on team have always mattered
Which ninja is using which of your equipment matters (including considering the rune, magatama, refine etc stat on there)

So the question you have to ask yourself is, are you sure you are using the exact same EVERYTHING as you did when you recorded your old power.

P.S. sometime new group skill bonus does not apply immediately, move your ninja around in your formation then back should have it kick in if that is the case.

ouh ok dude..this happens to me as well..so i am from a group lvl 8..with group skills maxed at lvl 40..when i decided to make a new group and when i left..i lose about 4k power..so basically 1lvl overall of group skills is about 100 power...when i made that new group i only got back 500 power..and since the group is new..the max lvl for the group skills is lvl 5..that means when u jump to a different group..when ur group skills is higher than the group max lvl..the rest of that skill lvl doesnt count

Hey

Unfortunately, that's most likely the case.
What group level is your previous group compared to the new one?

same level same group skills up to level 25
and I'm not even 60 yet so nothing should be effected I have my same EXACT team as before and still power went down

Group summons add stats and power to you, so it could be like the first person suggested and the group summon is lower level than your other group.

no group summons caught yet for both of the group that I have been to....so....now what? please

What was the total BP you lost?

I lost about 1500
15600 ->14000

I'll look into it.
PM you with further instructions