Backup/Restore minimum requirements

I’m asking especially as still my problem is yet not solved.
I started a complete new installation, did add my old item/rules/…files + the jsondb folder…all works fine…
after a reboot all items are shown in the GUI with default labels,…reboot…clearing the cache/tmp folder does not solve anything…

Any idea what could be wrong…
in the following threat already others seem to have the same problem…which is really painful as it comes after first restart and never goes away…items defined in the items file are shown correctly.

Metering via zwave (from jsondb, except the first entry))
as you can see, no custom labels anymore, icons are gone,…
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Switching via zwave (from jsondb)

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