PO 7.4 upgrade methodology

Hi,

We are in middle of upgrading our PI 7.1 instance to PO 7.4 (Java only). Since in-place upgrade from dual stack to Java only is not possible, the only way is to new install of PO 7.4 and migrate the objects from PI 7.1 to new system.

I was referring the SAP Document How-To-Guide "Decision making factors when moving to SAP Netweaver Process Integration 7.3"

It says you can migrate the content from old instance to new one in phased manner, while both Production instances (7.1 and 7.4) are in use.

My question is, If I use this methodology, Is there some time constraint for duration of project or would there be any license agreement violation?

Can anybody please help to answer this?

Thanks

Vik