If you miss out on the top 3 for any of the clan wars will they come back around to re attempt to get the emblem? Also if you came 4th does that drop you into gold division next time round?
I don't know if the locations will come back around, but your placement of 4th has little to do with placement in the clan war. My clan won silver, went to gold. We placed 5th in Gold, next two ops we were in Platinum. We placed 4th stayed in Platinum. It was in the large clan division.
There is an evaluation period before each war that has more to do with your placement than how you finished the last war.