prevent domain to self-import legacy scripts
prevent domain to self-import legacy scripts

switchinnovations/pxt,switchinnovations/pxt,playi/pxt,switch-education/pxt,switchinnovations/pxt,playi/pxt,playi/pxt,switch-education/pxt,Microsoft/pxt,switch-education/pxt,Microsoft/pxt,switch-education/pxt,playi/pxt,Microsoft/pxt,switchinnovations/pxt,Microsoft/pxt,switch-education/pxt,Microsoft/pxt