Alias created in U_ANTE_UPROC are not forwarded to the Uproc Script when a job is executing.
This is as expected a limitation to the system, because the Uproc script is Child Process of the U_ANTE_UPROC.
PID(U_ANTE_UPROC) == PPID(Uproc Script).
Alias definition which are not declared in the user profile are not transferable from a father to a child process.