Docker container checks are gone

Thanks, but it seems that i am to stupid…
Strange thing is that the config of the container is showing:

        "Labels": {
            "maintainer": "feedback@check-mk.org",
            "org.opencontainers.image.description": "Check_MK is a leading tool for Infrastructure & Application Monitoring",
            "org.opencontainers.image.source": "https://git.mathias-kettner.de/",
            "org.opencontainers.image.title": "Check_MK",
            "org.opencontainers.image.url": "https://mathias-kettner.com/",
            "org.opencontainers.image.vendor": "Mathias Kettner GmbH",
            "org.opencontainers.image.version": "1.5.0p18"
        },

So Version 1.5.0p18. That could be the former version, but after login it definitvely shows p24. And there is no volume attached.
Maybe i am faster with creating the monitors from scratch, but would like to understand why the monitors are gone.
Tried a lot of unused volumes in a new container but also without any luck.

I am using docker on a synology and have installed portainer for a while. I know i have modified something in the network area of the conainer and needed to replace it. So maybe within this process a new image was pulled, but then i should be able to use the old one…

Thanks,
Ede