David / Daniel Parallel Time

I have just finished viewing Parallel Time.

I noticed that everyone in Parallel Time had their same names as in Regular Time.  However, Daniel (who would have been David in RT) did not have the same name.

During one of the final scenes, Maggie says, "I have to get the children out of the house" and refers to them as DAVID and Amy.  This was obviously a slip up.

But does anyone know the reason the writers did not have him as David in Parallel Time???

PT Daniel may have looked like David (to us, anyway, the viewers), but he was the child of a 20th century Quentin who never existed in any form in RT, and PT Angelique (same story there, I guess), so the only sense in which "Daniel" and "David" are parallel or connected is that they lived in the same house.    He was a child of completely different parents than David, just played by the same actor.