Modulators lose all their connections

Hi,
I was just working in an (Ambisonics-) project for hours using LFO modulators on several tracks for panning (with VSTMultipanner).
After I finally exported the project, I realized, that some tracks had weird panning and looked into the modulators again. There I saw that all modulators in the project on all tracks had lost all their connections to what I assigned them to. So I had to remember what I did with each modulator and all their settings and set everything up again by hand.
I don’t know when in the process that happend, but it can not be too long before exporting, because otherwise I would’ve noticed the unwanted panning beforehand.

Has anyone also experienced that already?

(my backup is now, that I created a modulator preset for each modulator named after the track and with the settings in the name, so in case that happens again, I can at least recall it faster)

Did you by any chance open multiple projects?

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Critical - DATA LOSS DANGER: Modulator assignments disappeared from projects?! - Cubase - Steinberg Forums

I had only this project open and no second project opened simultaniously.

Did you close the project but not Cubase, then re-open open the project?

I also can’t get Modulator assignments to duplicate to a duplicate track, nor import properly from Track Archives, or Import Tracks From Project.

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It’s looking like this could occur simply by opening the project. Closing and re-opening the project any number of times might bring them back so long as you didn’t save the project when they went missing.