How to copy an iviem from standard role to zrole by copy or copy as delta?

Dear all,

I am a functional consultant just curious to know.

I have a basic question when i am creating an zrole for a project, i start with a copying an iview from the standard iview folders. Here when i copy that and then next step i need to paste it. Here i have two possiblities one is normal PASTE and another is PASTE as delta link.

So just to understand how would both options work, like if i adopt option 1. PASTE what will happen in future scenario and incase option 2. PASTE as delta link what will happen.

Appreciate your quick response.

Regs.

Raj