I have an Exchange account for my email and calendar, which I use on my Mac in the default Calendar desktop app, and on my phone in the Android Calendar app. On the phone, older items (last week and older) disappear, on the Mac they stay, so it looks like this is not an Exchange problem.
I want to see my old appointments on the phone, back to the first appointment ever. It's just text, so it can't be that much.
Why do these older items disappear and how can I bring them back?