One of my multijobs contains matrix-based testing and result-processing jobs, with the processed results aggregated to be displayed on the summary page of the multijob. The processing job works on the correct list of labels, matching the testing job and the results at that level are correct:

But the aggregated results include a very old run on an OS we don't test any more:

The consoles for the two jobs show the result processing job doing the correct things, but the multijob console contains this:

Starting to gather test results!
Going to gather results from matrix job QA_vw_branch_qat #706
Adding test result for job QA_vw_branch_qat/TestSlave=QA-RH8,label=qat #706
Adding test result for job QA_vw_branch_qat/TestSlave=QA-fedora,label=qat #706
Adding test result for job QA_vw_branch_qat/TestSlave=QA-fedora31,label=qat #374
Adding test result for job QA_vw_branch_qat/TestSlave=QA-sles15,label=qat #706
Adding test result for job QA_vw_branch_qat/TestSlave=QA-suse15,label=qat #706
Adding test result for job QA_vw_branch_qat/TestSlave=QA-ub20.04,label=qat #706
Adding test result for job QA_vw_branch_qat/TestSlave=QA-ub22.04,label=qat #706

I can't see anything in the current configuration for any of the jobs involved referencing fedora31; run 374 there is from July 2024. There are a number of other axes that we stopped testing which aren't pulled in to the aggregated results in the same way as fedora31.