Saved trips have disappeared twice

🚧 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/saved-trips-have-disappeared-twice/
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I entered 16 days of an upcoming cross-country road trip. A week later when I tried to access them, only the first two days were listed. So I painstakingly added the rest. A few days or a week later, I checked that they were still there. Now the trip begins next week and they are gone again!!! All but the first two days.
I can't do this again. :( We'll still use it but I can't say it will be a great experience. If there is some way to see more plans, I don't know what it is.