I was able to reproduce this behavior. Thank you for bringing this to our attention.
I have posted a Formativ Runtime Field Test File (FTF) to the following location:
It would be greatly appreciated if you could download this file and copy it over your existing version. (You will find the existing file in C:Program FilesAdvansysFormativ). Start GroupWise connected to your network to ensure the cache is updated. Disconnect as per your earlier test and see if the cache is maintained.
We look forward to hearing the results of your test. Once again, thankyou for bringing this issue to our attention.