Hello Guillaume,
I would say that in most cases, it is not neccessary to publish the data from connectors like S7+ or Modbus TCP Connector to ie-databus.
The data is still accessible for IIH without it being published to databus, publishing it additionally to ie-databus without use would just create extra traffic on the IED.
Do you have a custom application or how are you using these tags that make it required to be available on the databus?
And with bulk edit it is super quick to publish the tags to the databus if neccesssary, see picture: