That's a really good description and it's definitely a bug. Would you mind adding a comment to https://issues.frontierstore.net/issue-detail/69158 ... it's high time we got this bug officially confirmed.selling 1 million credits worth of exploration data (single system with an ELW) to the local starport yielded no merits and did not help to complete the weekly assignment.
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OTOH selling an equivalent amount of exploration data to my own Fleet Carrier which has a Universal Cartographics onboard completed the assignment immediately.
Nobody knows, not even Frontier. They would have said if they did.Buggy or intentional, I do believe that merits-from-exploration-data could really benefit from some clarification. What exactly are the requirements for getting merits?
Or, it's possible that the system scan you are selling must have at least one ELW, WW or terraformable in it for it to give you merits. I don't know if the requirement is this, or a minimum value for the system. One of those will almost always give you a million or several, so it's hard to discern without further testing or official specs.