Original sentence: The documents themselves have not been preserved: modern Romanian historians have revealed that Capitulations, as invoked in the 18th century to reaffirm Romanian rights vis à vis the Ottomans, were spurious; nevertheless, research carried out in the 2000s may have discovered genuine Capitulations and other documents taken as proof that the relations between the Danubian Principalities and the Porte did indeed have a contractual character.The pattern of a scarce or seasonal presence of Muslims (Turkish traders, small communities of Muslim Roma) in the two countries can be attributed to Capitulations (Ottoman Turkish: ahdnâme) believed to have been agreed between the two states and the Ottoman Empire at some point in the Middle Ages
Edited sentence: The documents themselves have not been preserved: modern Romanian historians have revealed that Capitulations, as invoked in the 18th century to reaffirm Romanian rights vis à vis the Ottomans, were spurious; nevertheless, research carried out in the 2000s may have discovered genuine Capitulations and other documents proving that the relations between the Danubian Principalities and the Porte did indeed have a contractual character.The pattern of a scarce or seasonal presence of Muslims (Turkish traders, small communities of Muslim Roma) in the two countries can be traced back to the Capitulations (Ottoman Turkish: ahdnâme) agreed in the Middle Ages between the two states and the Ottoman Empire