screen modifications in transactions through upgradation

Hi all,

How can we find is there any difference between 4.6 and ECC 6.0 transaction screen fields?

Actually I am working on upgradation.We have some BDC programs in 4.6.Suppose we upgrade the proframs to Ecc 6.0.If the sreen fields of transactions are not same in 4.4 and Ecc 6.0,it will result in error or dump.So I want to find is there any change.How to find?

TKS,

Dharani.P