Skyline cars under CP operation

I am hoping that someone can help answer some questions about the Skyline cars while under CP operation.  My
understanding is that VIA took over the operation of CP non-commuter passenger trains in October 1978 (or
was it 1979?) so my questions would pertain to prior to that time.  Perhaps the article by Doug Smith in the
1995 Canadian Rail Passenger Yearbook mentioned by Tom Box in post 68465 would contain many of these
answers and I need to get a copy of that. 

As I understand it the Skyline dome cars, as received from the Budd Co., were of uniform configuration.  They
contained a coach section with 26 seats, a coffee shop section at the base of the dome stairs, a small
kitchen, and a dome section.  

At some point there were modifications to some of the Skyline cars as follows:

1.  The original dome seats on at least two Skyline cars used on the Atlantic Limited were removed and
replaced with "walkover" seat backs which could be flipped to avoid having to turn the cars at the
terminals, esp. in Saint John.  My understanding is that the cars with these modifications lasted until
VIA took over the operation of the Atlantic and I assume at some point this seating was replaced by VIA.  

2.  On some Skyline cars used on the CP eastern trains, the coach seating was removed and replaced with some
type of parlor car seating which I understand was loose seating and not fixed swivel seats found on many
typical parlor cars.  It is unclear to me whether the parlor seating in the Skylines was ever sold as revenue
seating or if this was treated as non-revenue lounge seating.   I recall some of these Skylines being used on
the Atlantic in the early 1970s.

3.  On some Skyline cars the coach seating was removed and dining room tables and chairs were installed.  In
post 68391, Don Thomas indicated that in the late 1960s the Canadian would sometimes have two Skylines in
the summer and apparently one retained its coach seating and the other had dining room seating.  

The 1974 consists of the Canadian posted by Don Thomas in post 56358 shows at least one Skyline diner on the
Canadian but the other consists appear to have Skyline coaches.