"progress seamlessly" is correct and usable in written English.
You can use it to describe when someone or something continues in an uninterrupted, smooth, and successful manner. For example, "With a successful implementation, the project was able to progress seamlessly."
Many liberals and financiers imagined that, with the cold war over, free-market economics and political democracy would progress seamlessly.
Ideally, Nintendo would follow that tactic, letting you pick up the original Metroid or Golden Sun on either the 3DS or Wii U, save your state, and then keep playing on your other console with all progress seamlessly transitioning between the two.
Our conversation progressed seamlessly.
The reigning 400m champion Christine Ohuruogu progressed seamlessly to the final with her best time of the season, 50.16, where she will face the in-form American Allyson Felix.
This year is different: last year's third finisher, Pinot, has developed time trialling skill, and two other talented climbers, Warren Barguil and Romain Bardet, have progressed seamlessly enough to suggest that one day between the three of them they can end the hiatus, currently 31 years, since France last won the Tour.
Things, of course, aren't always easy, and it's hard to watch other peoples' lives progress so seamlessly.
Mussina Hit by Ground Ball Mike Mussina's first spring training with the Yankees had progressed almost seamlessly, until tonight, when he had to leave an exhibition game against Toronto after being hit on the inside of his left knee by a ground ball in the second inning.
And while much of the material flowing through that market is unassailably clean, the stele's progress shows how seamlessly looted objects can blend in, whether dealers are aware of it or not.
Scenes move so seamlessly and progress so fluidly that A-list characters, whether returning heroes like Falcon or newcomers like Black Panther, get their due diligence without compromising the fact Civil War is a standalone Captain America movie.
Hallett added that juniors who play highly competitive golf against strong players often progress to the next level seamlessly.
Here they seamlessly advance it," observes Colin Covert of Star Tribune.
