hi All, I had a experience of my calendar conflict between my Android mobile and Nextcloud Calendar App. DAVx5 returns me HTTP code 500, after i manually disable some calendars (i have few calendars in my account), sync, re-enable some of them step by step. It can sync again, i believe DAVx5 handled my conflict. Then i read the document from – https://www.davx5.com/manual/technical_information.html#conflict-handling , i realize that server data wins and replaced the Android data. Could i suggest to sync the data as still Server data wins, but do not delete Mobile Android data, just move that bad data to a new event, eg. title as “Conflict data: XX_original_title_XX”? thanks yan