Does existing RHEL 32-bit libraries (glibc and libstdc++) needed to be upgraded while upgrading WAA to a 64-bit environment?

Does existing RHEL 32-bit libraries (glibc and libstdc++) needed to be upgraded while upgrading WAA to a 64-bit environment?

Question: 
Does existing RHEL 32-bit libraries (glibc and libstdc++)  needed to be upgraded while upgrading WAA to a 64-bit environment?

Customer's Environment: 
1) OS: Red Hat Enterprise Linux Server release 5.5 64-bit
2) Old WAA version: WAA3.5
3) New WAA version: WAA4.3.1

Answer:
Libraries are not required to be upgraded for RHEL 5.x 64 bit

More information:
N/A