My retrieval was in March 2015, and we've recently returned to SGF to start FETs to TTC#2, so we are on a similar timeframe. We had to repeat the infectious disease bloodwork (DH and I both, even though this is an FET) and I had to have a mock transfer/saline sono. My RE indicated that he would have required a repeat HSG if I'd had a c-section. Other than that, I don't recall anything different, and certainly nothing like all the new patient paperwork and financial stuff from the first time around. If you've had an insurance change in that timeframe, I'm sure there are hoops to jump through, as well.