Patrick Duffy has said the Dallas reunion has been much easier for the original actors than the new recruits.
The actor reprises his role as Bobby Ewing in the big-budget update of the series, which is due to air next year, alongside original stars Larry Hagman and Linda Gray, and newcomers Jesse Metcalfe and Josh Henderson.
And he said he, Larry and Linda had no problem going back.
"The three of us had the same response to it. It was no effort whatsoever. We did it for 13 years, it was ingrained in us. We just had to put on the wardrobe, go to Southfork Ranch, read a script that sounded like the best scripts from those 13 years, and we were just back there," he said.
He went on: "It was a normal process. No research and reinvention. The problem is for the younger cast who come in playing characters established 13 years ago. Thankfully, we have a brilliant young cast, but to step into iconic characters and then have to invent it from scratch, that's a much more difficult process."
Patrick added that it mattered to him that all three of them were on board.
He said: "I wouldn't have done it without them. It wouldn't be a true and respectful remake without the three of us. When the new producer got us together for dinner one night, she said it couldn't be done - and shouldn't be done - without the three, and it was with that kind of respectful approach that we signed on to do the show."