Rails - Jan 2006 - indexing for sub items appears to fail after validation failureq

Hi all,

I have a table with an associated (has_many) table and a single form  
to edit the parent that displays the children as well.
The associated objects are represented via partials that contain  
indexed fields like: <%= text_field ''form[]'',
''pages'' %>

When there is a validation failure in the "child" form the oddest  
thing is happening, when the partial is rendered again the id is  
blank and the index operator is ignored..

Does this make sense? What could be causing this?