What version of Adagio Receivables do you have? If version 9.1A, you require the 2014.07.23 service pack. Otherwise an error would occur when converting AR data older than the 9.0A level, which would include Accpac Plus AR.
This is from the release notes for that service pack:
* An error occurred when converting data to 9.1A from a version earlier than 9.0A (2009.03.31) and the database was not converted.
_________________________
Regards,
Softrak Tech Support