Has an ectopic pregnancy's blastocyst ever been made to implant? Has an ectopic pregnancy's blastocyst ever been successfully extracted from the Fallopian tube and made to implant in the uterus?

Yes, this has been done by

* Wallace, C. J. (1917) Transplantation of ectopic pregnancy from fallopian tube in cavity of uterus. _Surg Gynecol Obstet_ **24** , 578-579
* Shettles, L. B. (1990) Tubal embryo successfully transferred in utero. _Am J Obstet Gynecol_ **163** , 2026-2027