I have a population drop every 20 days. I collect each 20 days and then buy improvements to match the new pop and infra. By the time I collect again I have 3-5 more improvements than I am allowed and must destroy wanted improvements to perform the swapping procedure for collection. This has happened for the last 4 times in a row. It is becoming really annoying.
Secondly, I went to buy a new wonder this month, and I find that I have to re-buy 3 of the wonders that i have previously had because they have just disappeared. I am following a strict wonder buying guideline set by our alliance and am sure that I have fulfilled each step before progressing to the next. I know I had the CIA because I already had the spies to, but found I had to rebuy it even though I still had the extra spies!
There is no way for me to show this with screen shots because I didn't take any prior to seeing the missing wonders!
What is the next step.