KM Navigation iview NW7.3

We have upgrade portal to NW7.3 and now some iviews we had with KM Navigation iview with alias, using <user.id> parameter, doesn't work.

http://help.sap.com/saphelp_nw04/helpdata/en/75/85fd3f093bc942e10000000a1550b0/content.htm

http://scn.sap.com/thread/1161358

Does this usage have disappear? How is it in new version?

There are more parameters  like this one in new version?

Any help?

Thanks in advance.

Best REgards.

Urtzi.