Empty tables during dataflow refresh

[mshparber]

I noticed that when I connect to a dataflow from within Power BI Desktop while it is being refreshed in the Service, I get empty table.

Does it mean that when a dataflow starts refreshing in the service, it deletes everything in the existing table?

Shouldn't it do the refresh first and only after that commit the results?
I have several dataflows and datasets that depend on other dataflows, and I am afraid that if the refresh takes long time enough (half an hour or more), this will feed empty tables to the dependant dataflows/datasets.

Or do I miss something?

[StefanoGrimaldi]

this will depend on how all its set up, but if you using the dataflows in a dataset that isnt live or direct query should be good, else you can also have a dataset storage the data and use a power automate flow that detects when the last dataflow that u getting the data from refresh send to refresh only them the dataset. this avoid the dataset to refresh at the same time of the dataflow and avoid the blank data part, remember that dataflows works as azure data lake gen 2. 

hope this helps out. 

[mshparber]

It doesn't make sense. 
When my dataset is being refreshed, my users don't see blank values in the report.

The data for users stays the same until the refresh finishes and "commits".

The same behaviour should be for dataflow refreshes, should it not be?