I have the Pooley's JAR-FCL logbook.
Column 11 Other Flying has a section purely for IF (sole ref). Whereas IFR is under column 9.
The column numberings IIRC come straight from JAR-FCL AMC.
I used to have the Jepp logbook and when JAR came in I moved to the Pooley's books - I havent the Jepp one which is compliant - Hope you got it sorted satisfactorily.