SAP GDS 2.1 upgrade from SP3 to SP4

Hi Team ,

We are trying to upgrade GDS2.1 SP3 to SP4 . Could you please let us know any pre and post steps required . We have tried to find sp upgrade guide book for GDS but with no luck .

I am bit confused about exporting the GDS related table holding configuration table ,do we need to do that and also import it back after patching ?

Please suggest .

Thanks