A query consists of one or more conditions that must be met by each work item in the result set. Each condition references a work item attribute, an operator and one or more values.
Till date, Queries can only be shared among members of same Project Area, Team Area or with individual users. There is no feature to share the Queries across different IBM Rational team Concert(RTC) Project Area's.
There is an existing Enhancement Request 318474 raised for the same:
As a workaround, you can create a Master-Child Project Inheritance which will allow the sharing of the Process configuration with other Project Area's.
1) Create a Master Project Area and create the Work-Item Queries.
2. Under Overview Tab, Allow this Project Area process sharing with other Project Area's.
3. Create a Unconfigured Project Area( Child project Area) and select the process sharing option to use the Master Project Area.
Currently, this only way to share queries across different Project Area's , as different project Area's might have different level of customization (ex: different custom attributes), which might make a query incompatible across different Projects.