The phrase "although it was improved" is correct and usable in written English.
It can be used to introduce a contrast or exception regarding the improvement of something, often in a discussion or analysis.
Example: "The product received positive feedback from users, although it was improved only slightly from the previous version."
Alternatives: "even though it was enhanced" or "despite the improvements made".
"If there has been a criticism of our attacking play, maybe we haven't scored enough from set-plays, although it's improved as the season's gone on".
But, Mr. Holbrooke added, "The U.N. still falls very far short of its potential, although it's improving under Kofi Annan's leadership".
First, the economy remains in pretty bad shape, although it is improving.
The city's recycling rate has lagged badly, although it is improving.
Google's store in contrast has at least 450,000 apps and it still lags in monetization (although it's improving!).
"In theory ebooks have the potential to be as rich and beautiful and interactive as any website, but at the moment they're constrained by the limitations of the epub spec (although it's improving all the time) and the limitations of individual ereader devices and applications (also improving all the time)," Young adds.
"In theory ebooks have the potential to be as rich and beautiful and interactive as any website, but at the moment they're constrained by the limitations of the epub spec (although it's improving all the time) and the limitations of individual ereader devices and applications (also improving all the time)," Young adds.
2) Comments module - not being a massive user of this, I'll bow to others' expertise, but again I'm glad at least it'll be consistent although it could be improved.
All of these 18 patients had some degree of neck pain before surgery and after surgery, although it was significantly improved (Fig. 4, panel c).
The track surface, although it has been improved over the years, is full of drain covers, white marking lines that are slippery when wet, bumps, various types and qualities of asphalt and the tunnel that curves and plunges a driver from the light into the dark with each of the 78 laps of the race.
