EntityData: Possible data duplication

[WeAthFoLD]

[11:39:26] [Server thread/INFO] [FML/]: Ignored network message cn.academy.ability.api.data.AbilityData@3bad9b1b, itn_query_init
[11:39:26] [Server thread/INFO] [FML/]: Ignored network message cn.academy.ability.api.data.CPData@4afffb45, itn_query_init
[11:39:26] [Server thread/INFO] [FML/]: Ignored network message cn.academy.misc.tutorial.TutorialData@40c20280, itn_query_init
[11:39:26] [Server thread/INFO] [FML/]: Ignored network message cn.academy.ability.api.data.PresetData@6bab42ec, itn_query_init
[11:39:26] [Server thread/INFO] [FML/]: Ignored network message cn.academy.misc.media.MediaData@5e3bafbd, itn_query_init
[11:39:26] [Server thread/INFO] [FML/]: Ignored network message cn.academy.terminal.TerminalData@71d73a54, itn_query_init
[11:39:26] [Server thread/INFO] [FML/]: An attempt was made to register exended properties using an existing key.  The duplicate identifier (LL_EntityData) has been remapped to LL_EntityData4.

It seems that this appears in log several times, even when player isn't logging in. I suspect this happens when server tries to save the game.