Hi Sue,
It sounds like you're talking about the Receivables transactions themselves, not the general ledger transactions they generate (to which this setting applies). Are you refering to the Receivables Aged Trial Balance report or the GL Detail Listing?
Transactions are moved from Current to History in Receivables when they are fully paid and Period End Processing or Statement Processing is performed.
Perhaps you could clarify which report you are referring to.
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Andrew Bates