You can create a column formula for this. You'll have to keep it up to date with valid Open values. Assuming that dt points to your table:
dt << New Column( "New Status Formula", Character, Nominal,
Formula(If (:STATUS == "Open" |
:STATUS == "Pending Group Discussion" |
:STATUS == "Ready to Deploy to QA" |
:STATUS == "QA Testing In Progress (on QA Platform)",
// then
"Open",
// else
:STATUS
)
)
);