Hi ZWO,
Just a bit more information I noted about this cord wrap issue. The previous night (13th Aug) I did the same goto from Omega Cent to Cent A, and the mount behaved fine, although it was somewhat later in the evening and Centaurus was closer to setting towards the horizon.
The next night when the mount did the cord wrap (14th Aug) I was observing a few hours earlier, so Centaurus was higher in the sky. Somebody suggested that the cord wrap might be a software artefact related to the mount doing a meridian flip somehow (despite being in AZ mode).
Cheers
Foxtrot