Hi Steve,
At the current time, No, though it is on our suggestion list.
This setting used to be 'remembered' from the previous detail on a credit note, but there were complaints that it was too easy to forget to enable the Return checkbox, and stock was not added back to inventory. Thus it works as it does now.
Also, the Detail tab of the Entry Template does not support defaulting field data (as is available for the Header tab), and even if it did, the Return checkbox is not available at this time for 'skipping' from the entry sequence.
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Regards,
Softrak Tech Support