Row "aggregation" disappears after editing the report

Hi there,
In our report we use many tables generated from data sets. Within the datasets we generate “aggregations” (Button: Add Aggregation). For symplicity we call them “a”. Now, after editing other things like Labels within the report, several aggregations “a” suddenly disappear in certain (but not all) tables.
Hence, after editing we always need to check every table, whether our aggregation still exist and otherwise reproduce them, which is very annoying.
You hae an idea why this happens?

Hi @ChrisK and welcome to the KNIME forum,

Could you figure out exactly what change causes the aggregated value disappear?

Could you please provide an example workflow and a scenario which reproduce the issue?