Items removed after model load?

Why do the Items seem to be removed just after creation?
I defined two things and three items in my configuration.
When this is loaded, OH2 creates everything correctly but at the end seems to delete the items.
Any idea what this actually mean?

This is my log. Everything seems fine, except for the last three lines where it says that the items are removed.

12:27:06.943 [INFO ] [el.core.internal.ModelRepositoryImpl] - Loading model ‘demo.things’
12:27:08.020 [INFO ] [smarthome.event.ThingAddedEvent ] - Thing ‘mysensors:bridge-ser:gateway’ has been added.
12:27:08.200 [INFO ] [me.event.ThingStatusInfoChangedEvent] - ‘mysensors:bridge-ser:gateway’ changed from UNINITIALIZED to INITIALIZING
12:27:08.214 [INFO ] [smarthome.event.ThingAddedEvent ] - Thing ‘mysensors:customSensor:gateway:key01’ has been added.
12:27:08.257 [INFO ] [me.event.ThingStatusInfoChangedEvent] - ‘mysensors:customSensor:gateway:key01’ changed from UNINITIALIZED to INITIALIZING
12:27:08.273 [INFO ] [smarthome.event.ThingAddedEvent ] - Thing ‘mysensors:temperature:gateway:batt01’ has been added.
12:27:08.286 [INFO ] [me.event.ThingStatusInfoChangedEvent] - ‘mysensors:temperature:gateway:batt01’ changed from UNINITIALIZED to INITIALIZING
12:27:08.308 [INFO ] [me.event.ThingStatusInfoChangedEvent] - ‘mysensors:customSensor:gateway:key01’ changed from INITIALIZING to ONLINE
12:27:08.329 [INFO ] [me.event.ThingStatusInfoChangedEvent] - ‘mysensors:temperature:gateway:batt01’ changed from INITIALIZING to ONLINE
12:27:08.455 [INFO ] [el.core.internal.ModelRepositoryImpl] - Loading model ‘demo.items’
12:27:08.698 [INFO ] [smarthome.event.ItemAddedEvent ] - Item ‘key01’ has been added.
12:27:08.706 [INFO ] [home.event.ItemChannelLinkAddedEvent] - Link ‘key01-mysensors:customSensor:gateway:key01:var1’ has been added.
12:27:08.714 [INFO ] [smarthome.event.ItemAddedEvent ] - Item ‘temp01’ has been added.
12:27:08.718 [INFO ] [home.event.ItemChannelLinkAddedEvent] - Link ‘temp01-mysensors:temperature:gateway:batt01:temp’ has been added.
12:27:08.725 [INFO ] [smarthome.event.ItemAddedEvent ] - Item ‘batt01’ has been added.
12:27:08.729 [INFO ] [home.event.ItemChannelLinkAddedEvent] - Link ‘batt01-mysensors:temperature:gateway:batt01:battery’ has been added.
> 12:27:08.740 [INFO ] [smarthome.event.ItemRemovedEvent ] - Item ‘key01’ has been removed.
> 12:27:08.746 [INFO ] [smarthome.event.ItemRemovedEvent ] - Item ‘temp01’ has been removed.
> 12:27:08.751 [INFO ] [smarthome.event.ItemRemovedEvent ] - Item ‘batt01’ has been removed.

I am using mySensors serial gateway, OH2.0.0.b3, RaspberryPi, …

Can someone explain me what this log mean?
I thought that this was the reason for an error I had when my items received a status update from the gateway (had this error: “Could not update state, because callback is missing”), but finally they seem to work correctly now, after a couple of reboots.
I still don’t understand why the log says “Item ‘itemName’ has been removed”.

Here are my conf files:

::::::::::::::
things/demo.things
::::::::::::::
Bridge mysensors:bridge-ser:gateway [ serialPort=“/dev/ttyUSB0”, sendDelay=200, baudRate=115200, skipStartupCheck=false ]
{
customSensor key01 [ nodeId=“100”, childId=“100” ]
temperature batt01 [ nodeId=“100”, childId=“255” ]
}

::::::::::::::
items/demo.items
::::::::::::::
Number key01 “Keyboard” { channel=“mysensors:customSensor:gateway:key01:var1” }
Number temp01 “Temperature” { channel=“mysensors:temperature:gateway:batt01:temp” }
Number batt01 “Battery” { channel=“mysensors:temperature:gateway:batt01:battery” }

Thank you!