Answer
Go to the Page Configurations page, select the relevant Client Model and choose Show Details, then make sure the Content column is included via the column chooser — clicking the small blue "paper" icon in the Content column for that command reveals the raw configuration text, including a URL-style string showing the actual parameter mappings (for example, {"url":"quickreport/123456;ParamName=${VariableName};directexecute=true"}) — this is the way to inspect a published command's mappings when Page Designer itself no longer shows them post-creation.