Hi Jing,
If you use Ledger that is integrated to your Receivables, then the correct procedure is to open Ledger and retreive the AR subledger batch.
Only if you do not use Ledger should you print the GL Transaction report (within Receivables) to the printer or a file. If this is the case, you would be asked if you want to clear the file. If you are not asked the question when printing this report, then you need to use Ledger and retrieve.
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Regards,
Softrak Tech Support