48 Khz Audio Rate with 12-bit Format

I'm capturing some old DV footage shot in 12bit format. However, when I capture, it is showing as 48KHz audio rate. As I understand it, 12-bit format should equal 32KHz rate.
I've got a Canon HV30
I've tried NTSC Firewire 32KHz in easy setup and also NTSC Firewire Basic 32KHz setup.
But the captured video Item Properties is still showing 48KHz.
Is this a problem?
Thanks,
Billy

Ian,
I think I figured out what happened. If you could verify this, it would be helpful.
As I went back through the video with the audio out of sync, I realized that it hit a spot in the tape where the timecode got out of sorts because I had a block that had no recorded info on it. In other words, I did not do as I should have and pre-recorded the tape to get the consistent timecode. The out of sync problem started happening immediately after that point where the "gap" occurred.
For some reason, iMovie seems to handle this problem better than FCE by essentially breaking the clip off at that point and starting a new clip when the new timecode comes into effect. FCE seems to "choke" on it a bit and then the audio goes out of sync thereafter.
That is my best guess as to what happened from what I'm seeing. Could what I describe cause the out of sync problem?
Thanks,
Billy

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General
Complete name                            : \CONTENTS\VIDEO\0068T7.MXF
Format                                   : MXF
Format profile                           : OP-Atom
Format settings                          : Closed / Complete
File size                                : 3.92 GiB
Duration                                 : 2mn 28s
Overall bit rate                         : 227 Mbps
Encoded date                             : 2014-10-15 13:33:41.000
Writing application                      : Panasonic P2 2.0
Writing library                          : Panasonic P2 2.0
Video
ID                                       : 2
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High 4:2:[email protected]
Format settings, CABAC                   : No
Format settings, GOP                     : N=1
Format settings, wrapping mode           : Clip
Codec ID                                 : 0D01030102106002-0401020201323104
Duration                                 : 2mn 28s
Bit rate                                 : 227 Mbps
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 50.000 fps
Standard                                 : Component
Color space                              : YUV
Chroma subsampling                       : 4:2:2
Bit depth                                : 10 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 2.193
Stream size                              : 3.92 GiB (100%)
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709
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Complete name                            : \CONTENTS\AUDIO\0068T700.MXF
Format                                   : MXF
Format profile                           : OP-Atom
Format settings                          : Closed / Complete
File size                                : 13.6 MiB
Duration                                 : 2mn 28s
Overall bit rate mode                    : Constant
Overall bit rate                         : 770 Kbps
Encoded date                             : 2014-10-15 13:33:41.000
Writing application                      : Panasonic P2 2.0
Writing library                          : Panasonic P2 2.0
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ID                                       : 3
Format                                   : PCM
Format settings, Endianness              : Little
Format settings, wrapping mode           : Clip (AES)
Codec ID                                 : 0D01030102060400
Duration                                 : 2mn 28s
Bit rate mode                            : Constant
Bit rate                                 : 768 Kbps
Channel(s)                               : 1 channel
Sampling rate                            : 48.0 KHz
Bit depth                                : 16 bits
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