We don't push all data to the mobile devices for Logbook Pro to keep the apps lightweight and fast. They are designed to add new data while away from your PC (main logbook). However, the reports are sent from the PC so they represent your entire logbook. DATA has no purpose once logged and should not be edited, etc. DATA input is used for report generation, analysis, etc. We will revisit this in the next round of updates as devices are much more powerful now then 10 years ago when we designed this concept.