Connecting the Item transfer node (Extra Utilities 2) to a framed chest (Bibliocraft) seems to delete the transfer node when attempting to access the chest to insert items. This is repeatable and seems to happen every time.

Need some testing/confirmation if still happening in 5.6+ pack version. Either way sounds like a mod interaction bug and will need to be reported to those mods accordingly if confirmed.

Still an issue in 5.7b

Mod issue that can't be fixed by Modpack.

Please report to Mod Dev.