See Limitations at http://www.trirand.com/jqgridwiki/doku.php?id=wiki:frozencolumns
“The following limitations tell you when frozen columns can not be set-up…
- When inline edit is used – the frozen columns can not be edit.
- When cellEdit is enabled…”
Thus one has to use the Form Editing (http://www.trirand.com/jqgridwiki/doku.php?id=wiki:form_editing) method to modify the data.
