Why would an SCS Printer File become AFPDS?

All:

I created a printer file defined with DEVTYPE(*SCS).  I then executed a
program using that printer file, which generated a spooled file.  The device
type on the spooled file in the OUTQ is *AFPDS.  What would cause this?

I have confirmed that the printer file used is my version (not the one with
the same name in production)...I know this because I changed items in the
printer file and those changes are reflected in the resulting spooled file,
plus when I look at the spooled file attributes it references the printer
file in the development library.

The production printer file IS AFPDS, but when I look at the test printer
file characteristics (using DSPFD), it clearly indicates a device type of
SCS.  Here is a list of the parameters used on the CRTPRTF command:
- DEVTYPE(*SCS)
- PAGESIZE(88 132 *ROWCOL)
- CPI(15)
- LPI(8)
- OVRFLW(85)
- DRAWER(3)
- SAVE(*YES)
- USRDTA(ACKNOWLDGE)
Is one of these triggering it?

I'm on a Model 270 running V5R4.  Has anyone seen this happen before?  Or do
I just need to adjust my meds?

Thanks in advance,
--Bruce Guetzkow