You should post a code example which reproduce the problem. Moreover I don't really understand your last remark. jqPrint how I know help only to print a part of page and make no changes in the code. So you are really print only what you see. If you use paging in the jqGrid and want to print all rows you have to display all rows before printing.
You can remove old jqGrid with respect of jQuery.remove(). jqGrid create some additional dives over the table element and the pager div. So if your table has id=”list” you should remove div with the id=”gbox_list”. It contains all other dives. After calling of jQuery.remove() you will have no more table and pager dive, so you have to insert there also
You makes all too complex. jqGrid can do ajax request you you and you don't really need use eval and addJSONData method. You use probably some code example created for a very old verion of jqGrid. Now you can use all with using the corresponding jqGrid parameters. If you post a code example (here on stackoverflow or both) I could show how it could be improoved.
All is possible. I am not sure, that what you want is the best way. In the most cases I recommend to use some standard way, then your live will be easier especially after change to a new version of the control which you use.
