I found the fix and am putting it here in case it might help someone.
This is how you can install components wanted.
- From file system, copy required component file (eg - wm_ruleadmin.pdp) from
<install_directory>/Portal/Components/admin/ui onto hard disk. - On MWS page, Administration->Administration Dashboard-> configuration-> install administration-> install-> next->Local or network drive-> Next-> (select file in step 1) → Finish
This would re-install the particular component back on MWS.