Web Dynpro Java : IView application parameters are lost

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Hello, Web Dynpro experts.

Have a big problem. Lets say I have IView which runs WD Java application with two views linked via plug. And I have application parameters assigned on that IView in Portal Layout. Both views (initial and second, after navigation via plug) use these application parameters. Everything works good on dev systems.

But on couple of systems application parameters are empty for second WD View (after navigating to it from first via plug). Could it be some configuration issue? Any help is much appreciated.

p.s. Reproduced on Netweaver 2004s SP 18, 22

p.p.s. Some finding: for dev system I have a list or parameters in URL, e.g.:

http://host:port/webdynpro/dispatcher/MyApp;jsessionid=(J2EE123123)ID123123End?some-system-param=someValue&myAppParam=myCustomValue

For system with this error url doesnt contain these parameters. Could it be related to my issue?

Thanks in advance, Mikhail