Bug: Collector for iOS version 10.3.4 deletes existing maps previously downloaded to the device and deletes edits that haven't been synched
Collector for ArcGIS (iOS) version 10.3.4 has been removed from the Apple App Store. After upgrading to Collector for iOS version 10.3.4, any existing maps previously downloaded to the iOS device and edits that haven't yet been synched are deleted.
The 10.3.4 update to Collector for ArcGIS included a software defect that causes data loss in devices storing local edits that had not been synched. To prevent users from installing the 10.3.4 update, this version was removed from the Apple App Store.
If you have already updated to 10.3.4, launching the Collector for ArcGIS app will cause data loss of any local edits in your device. To avoid data loss, do not launch Collector for ArcGIS until version 10.3.5 has been downloaded to your device.
Esri sincerely apologizes for any inconvenience that this may cause for your organization.
Collector for ArcGIS 10.3.5 for iOS is now available in Apple's App Store. If you have downloaded 10.3.4, but have not launched it, please download 10.3.5 to your device as soon as possible. If you have any questions, please contact Esri Support Services.