Current behavior:
When editing a Project Template and reaching the Translation Memories section, you can click on Select/Create new to assign a TM/TB to the template. However, all unsaved changes to the template are lost if you proceed to select/create a TM/TB.

Available workaround:
Save all changes before assigning a TM/TB to the template.

Requested behavior:
Add pop-up warning to notify the user that all unsaved changes will be deleted when leaving the page.

Use case:
Users might not be aware that their changes get lost when leaving the page, and will therefore need to re-add them when moving back to the Edit Project Template page.