[tryton] Problem saving registers on workflow form

[Francisco Maria Moyano Casco]

Hi,
    I'm using tryton 3.8. I'm trying to make a workflow that goes from draft 
state to request state. I defined the transitions, updates, and buttons:
      
     @classmethod
     def __setup__(cls):
       super(myClass, cls).__setup__()
       cls._transitions |= set((
          ('draft','request'),
         ))

       cls._buttons.update({
          'draft': {
              'invisible': Eval('state').in_(['request']),
              },
          'request': {
              'invisible': Eval('state').in_(['draft']),
              },
              })
       
    @classmethod
    @ModelView.button
    @Workflow.transition('request')
    def draft(cls, myRequests):
         ..........
         cls.write(myRequests,{
                 'request_date': datetime.now(),
                })


The thing is, that I had defined two pair of views for the same model.
On both pair when I clicked on the draft button, doesn't save the register. 
Only does what it has to do (put the datetime.now() on request_date field).
When I wanted to close the form, one of the form only close after confirm the a 
save message.
On the other form, it doesn't close. Ask me over and over again to save the 
register.

When I comment the line cls.write(....), acts normally, but doesn't do what I 
want it to do.

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