Hi,
I found that the search field in a fixedColumn is cleared by the fixedColumn()update() function.
See the example in http://live.datatables.net/qozuwoce/1/edit
repro:
-) open the example
-) enter some search quote in the search-field for Name (the fixed column)
-) enter [tab] -> search is done and rebuild table.
-) Now click on one of the Test-buttons in the Salary-column
-) The FixedColumn().update() is called and the entered seach-field is cleared, while the selaction is still active.
If you switch fixedColumns off then it's all OK.
regards, Marcel