Do a save all before committing

[dellerDLR]

Describe the bug
We noticed that comitten a model which is not completly saved can cause problems during a study.
As a result we should so a "save all" before committing.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. Windows 7]
• Version [e.g. 22]

[dellerDLR]

This is already done. Maybe there is a race condition, if the saving is not completed when a commit is started