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Hello,
I had entered via the Exchange administration panel a first time the hardware information (video projector or TV screen, video conference, etc.) in the meeting rooms with roomlists infos of our Microsoft Tenant.
After a few days, the information had disappeared. I switched to PowerShell and it worked again held for a few weeks but was deleted again.
How do I not do the job again once a month?
Viewing the information is really convenient for our employees!
Thank you in advance for your help,
Sincerly
Vincent
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Is your environment a cloud only one or a hybrid?
I agree with the suggestion provided by michev, you could take a look at the audit log to find who made the operation to your resource mailboxes.
View the admin audit log in Exchange Online
You may also check if your environment has any scripte run timely which will make changes to them.
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Any update here about your issue, have you checked the audit log and get any related information?
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It should not disappear on its own... have you run a query against the audit log to see what's happening? Check both the Exchange Admin audit log and the Unified audit log to be on the safe side.