If possible, could you also please provide the input/output bundles of the modules by running the scenario, then clicking the bubble on the top-right of each module, taking screenshots of, and copying the contents into this discussion thread:
This will allow others to better assist you. Thanks!
I can confirm the strange and unexpected behaviour of the Data Store modules, we’re waiting for the Support to respond.
Similar issue for us: Update Record module was overwriting (erasing, effectively) the fields that were left blank in it, even though it worked as expected (only affecting the fields that were explicitly mentioned in the module) for more than 2 years now.
Looks like an accidental issue, maybe a technical update went wrong or smth. Still, it’s dangerous, because it erases data from Data Stores, and partially restoring those from backups is a whole thing in itself…