spau and spdd issues

Hello,

While doing upgradation from ECC 4.7 to ECC 6.0 in SPDD phase all the objects were done reset to original in every tree i.e. with modification and without modification.Currently in SPAU when I am doing without modification all the objects are showing red traffic light.So is it possible for me to check what object were changed during SPDD as in version comparision no versions are found.

Is there time limit of 14 days for doing SPDD and SPAU

Thanks in advance.