I have a web map with point, line, and polygon data collection layers for Collector use. This map has been in use since last June. Data collection features are collected offline in the field, and synced back to the ArcGIS Online database. Each point feature was collected with a photo. All of these photos have disappeared from the AGOL feature layers when either viewed on desktop, or downloaded as a file geodatabase! Also, Android devices collecting data using this web map are unable to sync any photos back to the AGOL database (the features make it, but the photos are stripped), whereas on iOS devices, everything works fine. This is a serious issue,as we are collecting inspection documentation.