After upgrading capital to tier higher than vanilla was unable build which to build need upgraded capital i found only 5 building which need that fix so should work now. Report with which one appear issues.

List of that buildings:
nanite transmuter
embassy
posthumous employment
military academy
planetary shield

To upgrade tier 2 clone army now is need to have capital t4 before was t5.
Faster assembly, stronger empire :)

Added tier 2 for posthumous employment center which decrease debuff to production and increase trade for zombies.

Added few technologies to balance some tier 2 buildings:
all toxic baths tier 2
offspring nest tier 2
posthumous employment center tier 2

To unlock this technologies necessary are have unlocked tier 4 capital.

Fixed when clinic t3 can't be upgraded to t4.
Added offspring pool t2.
Fixed when capitals on hive world don't add offspring drone and reduce spawning drone.

Added tier 2 for toxic baths.