Pulling soft-credited constituents

I'm having difficulty pulling constituents who've been soft credited (since the original contribution came through either a donor-advised fund, or a second or third party vehical) to a list or exctraction.

I want to use date range and campaign as my criterea, suppressing gifts to the same campaign after the aforementioned date range.

All i'm able to pull are the hard credits. The soft ones won't show up.

Is there a way to include them?