Converting a BN into an ID

[Francisco Javier Díez]

If I create a Bayesian network and convert it into an influence diagram (with the network properties dialog) the GUI does not allow me to add utility nodes. Surprisingly, it does allow me to add decision nodes. The problem disappears if I save and reopen it.

[Iago París]

Issue #343 was marked as a duplicate of this issue.

[Jorge Pérez]

Fixed