Have you tried the refreshClass java action from the Community Commons utilities available from the App Store?
I have the same issue. refreshClass java action does not work. Does someone have the solution for this problem or is it a bug?
My bug in other words: I have a data grid with attributes (inline editable) that relate to other entities. Based on the selection some attributes are retrieved from the database (microflow on the entity, using a before commit event handler) should be refreshed in this data grid. The data contains pricing information which is summarised in the same datagrid. The sum is updated correctly, however the single records are not refreshed after commit.
I have used the communiticommons refreshClass, where the complete entity is configured as object which should be refreshed.