Can't load plan - destination not found - all missing

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/report-a-bug/cant-load-plan-destination-not-found-all-missing/
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Tried to retrieve an earlier plan and got the message that one or more destinations cannot be found. Frustratingly ALL the destinations are blank, so I will need to build the whole plan again from scratch.

I understand why one destination might be unretrievable but ABRP surely should show all the others in the list. This seems to be a bug.