Hello Geraki and Raimond
First, sorry for the disturbance. I'm not involved in the project, but I think I know the reasons why those messages have been changed.
Those labels have been created for VE, when VE was the only service using them. Now that Citoid is a service available both for VE, the new wikitext editor, and possibly more services, the label has been changed to have more sense for people who will work, improve and use the extension.
Those changes are made in advance. For instance, Citoid-citoiddialog-title has been imported to translate wiki on April 23, 2019. I would suggest you to bookmark the recent imports link on Translatewiki
, and check it time to time to catch up on new messages for MediaWiki.
Also, don't forget to delete the local messages you have created when the centralized messages will be imported on the wikis. Otherwise, you will have a non-matching translation if the centralized message is changed.
Hope this helps,