That is basically what I do now. I create a large reconstruction region in RC and export it. I then create a grid of reconstruction regions (outside of RC) that fit in the large region and import each one at a time and filter out all but what is the reconstruction region and then mesh and texture and export from there.
I just thought if RC lets you create a reconstruction region so you can export a section of what you want, then maybe it could allow you to create a grid of reconstruction regions and let you operate on one at time. Bypassing the tedious process I mentioned earlier. There is a another program that supports photogrammetry/lidar data that does it and I was hoping RC would be able to support it as well.
Maybe I will add it to the feature request section.
Thanks for the suggestion though. I will look into that as a possible viable alternative.