no I have never had to fake the present, play detective and such. the way my system worked was trigger related. anytime I encountered a trigger (positive or negative including something like I didnt know something or didnt know how to do something, the alter that did contain that information, took care of that trigger took control and handled that for me....

my system was like what you described in your past posts where if you needed to drive some where you would automatically switch to the alter that did know how to drive and drove for the others.

I didnt worry about memory problems because thats how I was all my life, it was my normal to not be able to remember and the switching to happen automatically based on each alters sense of agency (what each alters job, purpose, reason for being was and much more)

but now that I am integrated is does sometimes happen to me where one moment I will know or remember something I am doing and then it fade out and have trouble with it, sometimes lost. my treatment providers tell me in me some of that is just normal and other times its part of my other mental disorders and physical health problems and sometimes its because of my medications.

suggestion if this continues to bother you contact your or a treatment provider. they will be able to assess what the problem is and how to fix it. the good thing is if its a dissociative problem its very easily fixable through using grounding techniques, memory skills games and if you have co consciousness communicating with your alters to fill in the blanks.