Incremental DAR scan after a FULL scan

Hi,

Can anyone answer this question i have below.

I have completed a DAR scan on a share Using the WIDE search criteria, this has found a lot of false positives, over 70,000.

Is it possible to now do a incremental scan using the NARROW criteria afterwards to narrow down my results OR would i have to do another full scan using the NARROW criteria and then a incremental scan.

Thanks inadvance

Spookrider