Currently, modifying existing orders will recalculate values if exchange rate has changed, which destroys previous data (our use case is just to modify Planning value fields). Since fileds also have onChange event which also triggers caclNeworderTotal, onload event seems redundant.
Created attachment 2288 [details] [review] remove onload submited to koha-patches
Tested. Signed off.
This bug is mentioned in: Bug 4920 - neworderempty.tmpl shouldn't call calcNeworderTotal() onload http://lists.koha-community.org/pipermail/koha-patches/2010-December/013431.html
Pushed, please test