Views References breaks the exposed filter of another view

Hi,

It would be easier to explain the problem by describing what I have done:

- I have three related to each other content types: Site, Task and Expense - a Site links to many Tasks and each Task links to many Expenses. The Task content type has a field 'Site' to specify to which Site is the Task related, and the Expense content type has a field Task to specify which Task incurred the Expense.

- I have created a view 'Expenses', which lists all expenses for the respective Tasks and Sites which has an exposed filter by Site and Task. All works fine:

- Then in order to distinguish the Tasks (if they happen to have duplicate name for different Sites) when adding new Expense, I've created another view - without a page but with reference (following this screencast: http://vimeo.com/27726850). This works perfectly well when creating new Expense:

- However when I open the 'Expenses' view I see that the Task's exposed filter it totally messed up:

Does anybody knows how can I fix the broken exposed filter?

Thanks in advance,

Pimmy