How to change the Open in Web client default?

Seems worth mentioning that in the 4.0 release this can be set from eclipse->windows->preferences->Planning
Thanks to Filip Wieladek & Guy Slade for pointing that out in another similar question
https://jazz.net/forum/questions/77958/plans-get-open-in-rtc-web-from-client

We have a solution! We located the Eclipse prefs file which contains this preference setting.
1). First you need to determine where your Eclipse workspace is located. Usually it is here:
C:\Documents and Settings\<userid>\workspace301
2). Close your RTC 3.0.1 Eclipse Client
3). Next, navigate to and 'Edit' the following prefs file:
C:\Documents and Settings\<userid>\workspace301\.metadata\.plugins\org.eclipse.core.runtime\.settings\com.ibm.team.apt.ide.ui.prefs
4). Remove (delete) the following line. The value might be 1 or 2 depending on what choice you made:
5). Ensure the following line is present:
ask.planeditor.open.web=always
6). Save the file
7). Restart your RTC 3.0.1 Eclipse Client

I'd like to know as well.

Me too. We just upgraded to RTC 3.0.1 last weekend and we already have users asking how to "unremember" their choice for Opening Plans in Eclipse Client or WEB. Does anyone know?

Me too. We just upgraded to RTC 3.0.1 last weekend and we already have users asking how to "unremember" their choice for Opening Plans in Eclipse Client or WEB. Does anyone know?

I did find that renaming the Eclipse workspace to workspace-old and reinvoking the Eclipse client essentially loses this setting, but I can't determine in which Eclipse config file this setting is being saved (yet).