When adding a Link in Parallels Presence Builder 11.5.4, anything after '?' is getting duplicated on the published site:
Foreign Site Link only has one instance of the parameter (?Software=software1)
Published website has two instances of the parameter (?Software=software1?Software=software1)
The problem will be fixed in future update of Parallels Presence Builder that will be released after 11.5.7. Bug is 142862.