Wizard loses data

Hi.

I have 1-step wizard with table. Table contains documents associated with part (PartDocHelper.service.getAssociatedDocuments(...)).

When i submit wizard the request can contain data partly. So form processor also receives only part of the data from wizard table.

Total count of documents (and rows ia table) 13 for example. Sometimes request contains data of all 13 rows, but sometimes it can be 9, 10 or 11. It does not matter what i do with wizard and what fields i fill (i have checkboxes and textarea in each row). Data from first few rows is missing.

What can cause this error?

Thanks.