Well, I made the test. So read on if you are interested in this.
Effectively, only tracking with the ASImount app (no ascom, no asiair) the mount will stop tracking after a few minutes of passing the meridian. There is no way to avoid this. A setting to allow tracking after x degrees after meridian will be useful, but for now there is no way.
The workaround for this, if you like me are interested of tracking an object without meridian flip, in my case I want to track the sun for three hours to do a time lapse of the eclipse, taking a photo each 15 seconds, so a meridian flip in the middle of the event (as will be my case) will ruin the continuity of the timelapse.
So lets say the sun is at 11am at the east side of the meridian. I will goto to an object at the west side of the meridian and then manually with the arrows will locate the sun. The mount will be in an awkward position, make sure you will not hit anything doing this movement as RA will surpass the horizontal limit. From that point on the mount will track ok and will not perform flip as the scope position is already flipped.
Hope this helps anyone with the same situation.
Thanks