Hi dannylad100
Thank you for your post. I'd like to extend you a warm welcome to the Community Forum. I hope you find it a valuable resource.
In exporting data from MYOB file ,there's limited field that can only be exported and as of the moment paycheques is not included. This Help Article, Import and export fields, has the detailed information to what are the available data fields you may export.
Please feel free to post again I'm happy to assist.
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Cheers,
Princess