Duplicated project lost default engine

I wonder if this is a known issue. A duplicated project given by others lost it's default engine setting.
(We are using version 2.1.)

Steps:
- User A log on Xerte and created an Xerte Online Toolkit project (about 80 pages containing multimedia pages). The project is using "Javascript (a.k.a HTML5)" as the default engine (black interface).
- User A then Duplicate the project
- Check the duplicated project, it's the same to the original one.
- Click on the Properties of the duplicated project and Click Give this project to User B.
- User B log on Xerte and click Preview the project. It presents it as Flash player/engine (blue interface). However in Properties, it shows the "Javascript (a.k.a HTML5)" as the default engine.
- User B has to edit it to "Flash" and play the project first, then change it back to "Javascript (a.k.a HTML5)" as the default engine again.

Thank you for reminding us. This is a known bug and will (now) be fixed in the next version.