I have tried the instructions given in 
http://roundup.sourceforge.net/doc-
0.7/customizing.html#editing-multiple-items-in-an-index-
view

and created a derived index 
template "issue.indexnew.html" (see attachment)

I am using it from an URL with filter parameters like

http://ors-x-wiki:8080/demo2/issue?
@template=indexnew&:sort=-
activity&:group=status&:filter=priority&:columns=id,activi
ty,title,creator,assignedto,status&priority=6

Now when I change values and press "Save Changes" 
the changes are done as expected, however an 
additional new issue is created as well. This is probably 
due to all the parameters from the original url that are 
submitted via 

<tal:block replace="structure request/indexargs_form" />

Even worse, if my filter includes multiple values, e.g. 
&priority=3,4,5,6 then I get a parser error.

Is there a way to prevent the index edit action from 
creating new issues.

I am using 0.6. and the instruction is for 0.7 - is this the 
reason and is there a "downgrade" available?

Kind regards,
Robert Seeger
robert DOT seeger AT usa DOT net