Waveform chart data comes from both sides...?!

Hi,
I'm experiencing something strange with my chart that I can't quite get to the bottom of... I'm acquiring waveform data from 2 separate cDAQs. The data is concatenated into 1 array of waveforms and then displayed on a chart.
The strange thing is, the data from 1 cDAQ starts at the left side of the chart, and the data from the other cDAQ starts at the right.... and they cross in the middle.. never really reaching the end of the chart....
I've attached a screenshot of the chart.
Has anyone ever experienced anything like this? I couldn't seem to find much info on why this would happen... I'm quite baffled. Any help would be appreciated.
Thanks!
Attachments:
chart.jpg ‏27 KB

Some code would be nice to have. Here are the couple things I would check:
1. Cheart properties. People like to change these for some reason and make things not work nearly the way they should
2. Look at the T0 of the waveforms. Are they different? This is likely your cause. Again, need code in order to try to find an issue here.
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Attachments:
CA1.vi ‏11 KB

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Attachments:
CA1.2.vi ‏11 KB

Waveform chart data comes from both sides...?!

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