SQL problem

There is a problem in my development system which was recently upgraded to V5R3 
when I take option 15 beside a SQLRPGLE module

 

Commitment control . . . . . . . COMMIT         *CHG       

Close SQL cursor . . . . . . . . CLOSQLCSR      *ENDACTGRP

 

This causes errors when running programs as sql statment failure because either 

cursors are remained open from previous reads or commitment control is set on 
that file.

 

 The values should be actually (they used to be in V5R2)

 

Commitment control  . . . . . . . . . . . . . . . . . :   *NONE

Close SQL cursor  . . . . . . . . . . . . . . . . . . :   *ENDMOD

I came to know that this is because of the upgrade to V5R3. If we change the 
Command Defaults every time we perform an upgrade these commands will be 
changed to what the new release is set to. 

If we  change those defaults for CRTSQLRPG and CRTSQLRPGI, is this going to 
affect me ?

our production is V5R2, development is V5R3, when we move these to production 
am I going to have problem?

any other commands like these which have got changed due upgradation just like 
what I mentioned in above example?

Thanks for your help....