Hi Keith,
Dashboards support bringing over all reports cross-app. One stumbling block that catches some people though is that once a widget is added its type can't be changed. So if you dropped a table report widget for example you would then only see table reports as options instead of seeing all types of reports. You may want to make sure you are dropping a new widget into place that matches the type of report you are looking to pull in cross app which is a little different from homepages.
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Evan Martinez
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