I had my 9 embryos tested on Day 5 and then frozen. 2 of them did not have enough DNA to test and had to be rethawed, rebiopsed and then refrozen.
I would go for it. Both of my embies made the thaw, both came back normal and were refrozen. I did lots of research and found numerous articles that as long as they were healthy normal embryos they were not affected by refreezing process. Vitrification freezing process only.
I am glad we did this as 5 of the 9 were chromsomally abnormal. We would have only had 2 embryos then.
I am transferring one of them in 2 weeks. So the jury is out but I am hoping they do ok.
Best of luck!