Working on a cloud-hosted 4D collaboration project requires an active internet connection. If it is necessary to work offline for some reason, a user with full Admin permissions should perform the following steps:
Only one iModel per Control project can be marked 4D or 4D Snapshot. If instead of using the Re-submit my offline changes, you add a new iModel you will be prompted to delete the existing iModel. The following dialog will be raised. Type "delete" and press Delete to completely delete the previous 4D iModel - in this case all forms in the project will lose their association with the model. Otherwise press Cancel, then Edit the existing 4D model to Re-submit my offline changes - which will retain the association between forms and model locations.
NEXT: Differences between SYNCHRO 4D and SYNCHRO Workgroup Project (SWP)