This article applies to:
This item is fixed in E-Prime 1.1 Service Pack 2.
Removing any object from a Procedure timeline through the workspace or Structure view and then immediately closing E-Studio does not prompt to save changes. Upon opening the .es file, the item removed remains on the Procedure timeline.
Update your system to E-Prime 1.1 Service Pack 2.
This workaround is intended only for those who are unable to update to the version of E-Prime that contains the bug fix:
Manually save your experiment prior to removing items from a Procedure.