watch them for another 2 weeks. if anything is going to happen, its going to happen during the first period of introduction to a new tank. hopefully your amazonia tank is cycled, but to me it sounds like it might not be completely done. have you tried to not do water changes for a period of time and the test the water for ammonia? if there is no ammonia or nitrite and low nitrates after you have NOT done water changes, then it might be ready. but even then more sensitive shrimp might die. i dont see sensitive shrimp in the ones you listed though.
Hopefully they'll live!