a4fcd2296a
For async records to be usable in user triggered (eg. via RSRV) scan chains, queuing must be handled properly in the event that a second dbPutField() is made before the scan chain has completed (eg. a double click on an OPI). We change the meaning of PUTF so that it is propagated through DB links to indicate the pass through the scan chain directly triggered by a dbPutField(). propagation is broken if a busy async record is found, and that record is instead scheduled to re-process on completion.
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