Upgrading SAP SCM5.1(2007) dual stack system to SCM7.0 EHP3

Hi Experts,

I am planning to upgrade my SCM 5.1 (2007) dual stack system to SCM7.0 EHP3.

Please provide the possible procedures to upgrade.

Can i directly upgrade the scm5.1 dual stack to scm7.0 ehp3 dual stack (is it supported?) by calculating stack.xml file?

Or do i need to split the stack before upgrading to target release.I read SAP has discontinued supporting dual stack.

So please let me know what are the options to upgrade SCM5.1 to SCM7.0 EHP3 NW 7.40

Thanks for your help in advance.

Regards,

Krishna