FYI if you are creating mixes with the current Cab Lab, there is a major bug that is acknowledged by the developers and is being currently addressed.
http://forum.fractalaudio.com/threads/loss-of-fidelity-in-impulses-cab-lab-3.109585/page-2
Ryan Buckley - "The raw .ir file created via the IR Capture functionality is not affected. You will not have to re-shoot IRs. As of now the .ir files created via 'Save Mix to Disk' are affected. Please note that 'Save Mix to Disk' under Save + Export is different than 'Save as File' under IR Capture. When performing an IR capture the IR data is captured and processed by the Axe-Fx II. Cab-Lab just retrieves the data and writes it to disk without additional processing of the impulse response. In addition, the .ir files created using Wav2Syx are not affected. Also, .syx files are not affected.
In all, the only way you would be affected by this is if you created a mix, saved it to disk, and then used the resulting .ir file in a subsequent mix.
This applies to the standalone and Lite versions only.*
As of now we're planning to remove the .ir file generated during a mix. Why? Because it's not really useful. Instead of saving a mixed .ir make sure you save your session! Saving the session is exactly the same thing as saving the .ir with the added bonus of being able to adjust the original mix. Wav2Syx batch conversion will still generate a .ir file.
That being said,
you will not have to reprocess your .syx files created with Cab-Lab, however, these updates to Cab-Lab will coincide with UltraRes 2.0 so you may want to reprocess the files anyway. UltraRes 2.0!?
Yes, Cliff has devised a way to make UltraRes even better and support will be included in the next Cab-Lab release. But to reiterate, reprocessing your .syx files created with Cab-Lab is not required.
Finally, all changes to Cab-Lab will be included in the release notes.
*In post #11 Morphosis showed his IRs being truncated to 2K when using the plugin. This is not related, however, I've increased the buffer size to 8K so that the plug-in will use the full resolution of mixed IR."