For each set of scans I normally create a Point Cloud Region for each Time Period and add all the Scan Data from that Time Region to it. That clears out the "Default Scan" so it can receive the next time period of data. Then you have a Master point Cloud Region for Each Time Period that you can manipulate individually.
Where there are Scans and Photos I have never done that personally so the Geospatial Team would have to answer it. If you want to share a number of Time range sets of data with me, I can work through this and give you a suggestion next week on the best workflow
Apologies but the SX10 falls in Geospatial Team and I typically just work with the point Clouds - I can work on the other parts but I dont have any example data personally for this
Alan