Tracking G Product Listing Ads

i have a problem with tracking the new google shopping adword product listing ads.

so far everything works fine.

my problem is that piwik is not showing enough attributes.

we have from piwik:
pk_campaign=
pk_kwd=

and from adwords:
adwkwd={keyword}
adpos={adposition}
{copy:[name]}
netw={network}
dev={device}
dvcmdl={devicemodel}

the last one is trsnmitting us needfull informations from adwords which we need to track.

at least keyword and position is very important.

as soon as i ad these with a "?" after the piwik tracking attributes i dont see them.
as soon i put them without a"?" i see them attached to the "pk_kwd=mykeyword" but then i dont have those keywords gouped together anymore.

which means
keyword1-adwkwd=mobile_telefon-adpos=1-{copy:[name]}-netw=google-dev=nokia
keyword1-adwkwd=mobile_telefon-adpos=1-{copy:[name]}-netw=google-dev=iphone

is not in the same group

how can i solve this?

piwik needs to seperate more attributes.