Thanks for all the detailed information. I do Appreciate it. Sorry I cant reply that much because I am drivingthe unfortunate steadfast rule is twofold:
if you broken any aseptic chain of command lately and its tied to a fish wipeout, even if some other possible contributor may have caused the fish kill, you must re fallow your system from fish disease and I'd choose the long version, not the short version, because half efforts aren't rock and roll.
full efforts are, complete command in reef cycling is what you want.
to find out what killed your fish is the #1 goal, the ammonia stated as is/nh4/not benched off any other kit/ isn't even a factor whatsoever.
if you feel the chain of disease inputs remained controlled and it was only a move stress, then buy some new fish and add them. make sure they're prepped.
your fish will swim, eat and feed normally because your tank is so cycled. if api shows something wonky, consider the last 2 pages + buy a seneye, you'll feel much better about it all with a $190 meter for something we can predict in all reef tanks to a T, and log it constantly.