I did all sort of actions: uninstall install binding, changed the mqtt.cfg.
I do not see any trace in the log file, neither do my items do any traceable output:
Number CWLStep0Vol "CWL Volume 0 [%.0f m3]" (gPersist) {mqtt="<[mqtt:ebusd/wolfcwl/LuftmengeStufe0:state:default],>[mqtt:ebusd/wolfcwl/LuftmengeStufe0/set:command:*:default]"}
Number CWLStep1Vol "CWL Volume 1 [%.0f m3]" (gPersist) {mqtt="<[mqtt:ebusd/wolfcwl/LuftmengeStufe1:state:default],>[mqtt:ebusd/wolfcwl/LuftmengeStufe1/set:command:*:default]"}
Number CWLStep2Vol "CWL Volume 2 [%.0f m3]" (gPersist) {mqtt="<[mqtt:ebusd/wolfcwl/LuftmengeStufe2:state:default],>[mqtt:ebusd/wolfcwl/LuftmengeStufe2/set:command:*:default]"}
Number CWLStep3Vol "CWL Volume 3 [%.0f m3]" (gPersist) {mqtt="<[mqtt:ebusd/wolfcwl/LuftmengeStufe3:state:default],>[mqtt:ebusd/wolfcwl/LuftmengeStufe3/set:command:*:default]"}
Number CWLBypassOp "CWL Bypass Operation [%s]" (gPersist) {mqtt="<[mqtt:ebusd/wolfcwl/Bypassbetrieb:state:default],>[mqtt:ebusd/wolfcwl/Bypassbetrieb/set:command:*:default]"}
use to work in 2.3.0.
Here the the only mqtt.cg entry:
# URL to the MQTT broker, e.g. tcp://localhost:1883 or ssl://localhost:8883
mqtt.url=tcp://vevedock:1883
Did test at console, which works perfect (mqtt broker ok)
I guess your update introduced the ability to install the openHAB 2 mqtt binding, which automatically makes your used OH1 version “legacy” and uninstalls it.
If it isnt installed and you cant find it under addons, you have to enable legacy bindings.
The OH1 and OH2 bindings are highly different in the backround and in their usage.
So you need to migrate your mqtt devices which will take some time maybe.
For sure it would be better to use the new one on long term, but the old version is simply not compatible to the OH2 version.
WIth using the OH1 version (for now) you should get back your full functionality very fast and are able to migrate step by step afterwards without a need to rush.