The phrase "although it is learned" is correct and usable in written English.
It can be used to introduce a contrast or exception regarding something that has been learned or acquired.
Example: "Although it is learned, the skill requires constant practice to maintain proficiency."
Alternatives: "even though it is acquired" or "despite being learned".
The chronicle states that the invaders made landfall at Ronaldsway, and entered into negotiations with the Manx people; although, when it was learned that Eógan styled himself "King of the Isles", the Manxmen took offence and broke off all dialogue.
Fei and Citan at first appear to be from this land, although it is later learned that they originate from the capital cities Aphel Aura and Etrenank of the floating countries of Shevat and Solaris, respectively.
Although the sparsity is learned from the data itself in K-SVD, K-SVD fails to compete with BM3D.
However, although it is generally assumed that humanism is learned by medical students and residents through formal teaching and observing faculty physicians as role models, little evidence supports the effectiveness of faculty role modelling as currently practiced.
Torre called the bonuses for advancing in the playoffs insulting, although it was later learned that he had incentives in previous Yankees contracts.
Nearly everybody in Oradour was killed, 642 people in all, although it was never learned why Oradour had been chosen for the massacre.
Although it was later learned that the Communists did not even realize Bundy was in Saigon, and hardly knew who he was, Johnson and Bundy both assumed Pleiku was a direct answer to Bundy's visit.
Judge Johnson has instructed Mr. Clinton's lawyers and Mr. Starr to prepare to argue the issue of executive privilege before her, although it could not be learned if a date for such arguments had been set.
This was unlikely to be important in our study as the group were familiar with procedures prior to collection of the data presented here, although it is possible that learning effects persisted into the study period.
