Detail Calendar Sync

Good day everyone,

First off, i want to wish you all a happy 4th, may it be a safe one for you all. Now to my question, i am trying to understand integration broker a little bit better since i do not really have much experience in this area.  An issue occurred where A person's(all individuals) giving history in contributor relations was not up to date, i was told that this issue may have been caused by Integration broker not syncing the detail calendar in financials over to Campus solutions which contributor relations is apart of. Can anyone point me in the right