Thank you for your replies.
I have tried both methods that you had suggested and the result is the same as what I was getting from my original inputs.
Here is a link to a comparison screenshot of the same data in Sparky nmrDraw (showing the same plane at 113.9 ppm in the 15N dimension )
I have used the same methods that I had mentioned before for the hcacb, and cbccaconh spectra in this dataset with no problems.
In case it helps, here is the macro for the data processing for the cc(co)nnh data:
var2pipe -in ./fid -noaswap -aqORD 1
-xN 1024 -yN 144 -zN 64
-xT 512 -yT 72 -zT 32
-xMODE Complex -yMODE Complex -zMODE Rance-Kay
-xSW 8384.865 -ySW 10056.517 -zSW 2025.983
-xOBS 499.861 -yOBS 125.695 -zOBS 50.656
-xCAR 4.726 -yCAR 46.013 -zCAR 118.006
-xLAB HN -yLAB C -zLAB N
-ndim 3 -aq2D States
-out ./data/test%03d.fid -verb -ov
xyz2pipe -in ./data/test%03d.fid -x -verb
| nmrPipe -fn SOL
| nmrPipe -fn SP -off 0.35 -end 0.99 -pow 2 -c 0.5
| nmrPipe -fn ZF -auto
| nmrPipe -fn FT
| nmrPipe -fn PS -p0 -142.0 -p1 0.0
| nmrPipe -fn EXT -x1 11.0PPM -xn 6.0.0PPM -sw
| pipe2xyz -out FT2/test%03d.ft2 -x
xyz2pipe -in FT2/test%03d.ft2 -z -verb
| nmrPipe -fn SP -off 0.5 -end 0.9 -pow 1 -c 0.5
| nmrPipe -fn ZF -zf
| nmrPipe -fn FT -di
| pipe2xyz -out FT2/test%03d.ft2 -z -inPlace
xyz2pipe -in FT2/test%03d.ft2 -y -verb
| nmrPipe -fn LP -fb
| nmrPipe -fn SP -off 0.45 -end 0.99 -pow 2 -c 0.5
| nmrPipe -fn ZF -auto
| nmrPipe -fn FT
| nmrPipe -fn PS -p0 0.0 -p1 0.0 -di
| pipe2xyz -out FT2/test%03d.ft2 -y -inPlace
xyz2pipe -in FT2/test%03d.ft2 -z -verb
| nmrPipe -fn HT
| nmrPipe -fn FT -inv
| nmrPipe -fn ZF -zf -inv
| nmrPipe -fn SP -off 0.5 -end 0.9 -pow 1 -c 0.5 -inv
| nmrPipe -fn LP -ps0-0
| nmrPipe -fn SP -off 0.5 -end 1.0 -pow 2 -c 0.5
| nmrPipe -fn ZF -auto
| nmrPipe -fn FT -di
| nmrPipe -fn POLY -auto
| pipe2xyz -out FT3/test%03d.ft3 -z -inPlace
xyz2pipe -in FT3/test%03d.ft3 -x -verb
| nmrPipe -fn POLY -window 4 -ord 1
| pipe2xyz -out FT3/test%03d.ft3 -x -inPlace
xyz2pipe -in FT3/test%03d.ft3 -y -verb
| nmrPipe -fn POLY -window 4 -ord 1
| pipe2xyz -out FT3/test%03d.ft3 -y -inPlace
xyz2pipe -in FT3/test%03d.ft3 -x gc_co_nh.ft3
pipe2ucsf gc_co_nh.ft3 gc_co_nh.ucsf