Provide backup or revision history
It is very easy to delete the entire project. With multiple users, this can be a problem. The project manager or admin needs some way to ensure that data can be retained. A backup mechanism would be helpful. An even more helpful alternative would be full revision history, allowing you to revert back to previous versions, as in Google Docs.

We’ve added an activity feed to the project. It tracks changes and allows you to undo only the changes you wish, without having to restore the whole project back to that point in time.
For a full review on this release, check out our blog here: http://teamgantt.com/blog/2014/08/11/new-feature-activity-list-and-undo-now-live/
-John
9 comments
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Philip CIaccio commented
Yes backup and revision history needed ASAP
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egedi commented
it seems like someone from my team happened to delete loads of tasks from a project, accidentally... How can I have them back?
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Fabian commented
A trash bin!
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Boris Folgmann commented
Possible work-arounds:
1. From time to time save project as CSV. Additionally the downloads are automatically attached as files to the topmost project group. Though the CSV-Import for new projects is marked as being Beta.
2. From time to time create a new projects and choose to duplicate the existing one. -
Anonymous commented
Can I make multiple copies of a project to save versions manually? Just name them by date?
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Anonymous commented
We're still in trial and, as we're getting acclimated to TeamGantt, I accidentally moved an ENTIRE TASK - and don't remember the correct start/end points.
An 'undo' will keep me as a paying customer.
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Jeff commented
I'm actually quite taken back that this feature does not exist yet. Backup capabilities is a must. Also, as AnneMarie stated, an undo button and revision history are equally as important.
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AnneMarie commented
Along with the revision history, there should be the ability to go back to a previous version. Also, a simple "undo" button would go a long way to make this good tool great. Without the "undo" option and the revision history, making changes become this task that needs to be assessed and reassessed before being implemented. Not the ease of use we were looking for.
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Christoffer Furnes commented
It would be nice to have a backup of the projects if I'm going to put all the company's planing into teamgantt