Thanks for the answer Andrey!If that's the case, then that's a shame, although I have seen a number of different pieces of Adobe documentation and 3rd party content that suggests that a ECID/MID can be consistently recalculated from the UUID and Organisation ID.One example: https://experienceleague....

Hi,I have an external dataset that I need to join to Analytics data in a warehouse. Unfortunately the external dataset is keyed by AAM UUID, whereas my data is keyed by the ECID/MID field, which is preventing me join these together.How can I convert the UUID to a ECID?The ID documentation from the A...