estaban conciliando
-they/you were reconciling
Imperfecto progresivo para el sujeto ellos/ellas/ustedes del verbo conciliar.

conciliar

Al 3 de julio de 2008 se estaban conciliando los registros y se preveía que el proceso concluiría a la brevedad.
As at 3 July 2008, the records were being reconciled and the process was expected to be finalized soon.
Palabra del día
la búsqueda del tesoro