SilverWook said:

Puggo - Jar Jar's Yoda said:

When ESB was produced in 1980, Obi-Wan didn't even know Leia was Luke's sister. I don't even think George knew that.

When they had Obi-Wan deliver the twins to Ben's farm in ROTS, nobody at Lucasfilm stopped and said: "oops, loss of continuity, we can't do it that way".

He only delivered Luke to Owen's farm. ;)

Right - actually, I knew that. Mis-typed. The actual problem was his knowing that there were twins and being thusly involved in hiding them.