If you converting a contact into a case the general comment is not transferred and must copied manually.
write something into the general comment

transfer the contact into a case, the comment is empty

The comment should be transferred into the case.
@Marko-ilmkreis I don't actually know whether this should be the case. The general comment of a contact could very well have information that is very specific to the contact event and doesn't provide any value for the case, and vice versa. @bernardsilenou @kwa20 What's your take on this?
@MateStrysewske our colleagues are writing informations regarding the family in this field. So that they know who are other family members which are in quarantine.
In my opinion it shouldn't be a problem to convert this field. If the information is not needed if could be deleted easily. Maybe a solution might be that the fiel is transferred with a prefix stating that this comes from the former contact.
@MateStrysewske @Marko-ilmkreis This change was actually requested a few times. Since this field can be filled with many different entries, I understand the need for it and the advantage of not having to reenter or copy paste relevant info. However, I agree that this should not be done automatically for every conversion because adopting entries might not be desired everywhere.
Therefore, we could add a notification during the conversion of a contact to ask the user, if they want to adopt entries of the general comment field in the case that will be created.
@kwa20 I like that solution! Please make sure to prioritise this issue as it's not a bug and has to be fit into our schedule.
If it would be possible to have a confirmation dialog that would be great.
Notification upon case conversion:

@MateStrysewske @Marko-ilmkreis I unfortunately cannot change the title. Could we make it conform to my last comment? e.g.: "Add option to adopt general comment entries upon case conversion"
@kwa20 I'd suggest to maybe not use a popup but a checkbox in the creation window that can be ticked? That's less annoying for users that generally don't want to use this feature.
@MateStrysewske Great idea! I like this alternative a lot. We could only show this checkbox during a conversion process then. If this is harder to do we could also disable it (grey it out) in the normal case creation process.
Sorry to get late in the conversation.
@bernardsilenou when a general comment to person is introduced it should be shown a in the case person/contact person section of each case/contact referring to that person.
Maybe introduding this new field would solve the problems mentioned be me in this ticket. So the users can enter general informations to the person there and it will be shown every time, also after converting a contact into a case.
The current fiel with general comments stays like it is. Maybe a rename could be useful to make clear that its a general comment to that case or that contact only.