I have a simply tag name filter *:*
I want every tag using a colon in its name.
If I code this up with FindPIPoints using a string filter or a PIPointQuery (with the Equal search operator) then it works fine with *:*
If I do the same via the PI Point DR Tag Search it complains that: '*' is an invalid PIPoint attribute name.
If I escape the colon using *\:* in the tag search I get the same results as FindPIPoints. Obviously most users won't know to do this, nor should they be expected to do so.