On a Conflict of Interest disclosure, what's the difference between 'ongoing' and 'current'?
You'd have to check with the journal to be certain, but based on what I have seen in other places, I would guess that the difference is whether the relationship causing the conflict of interest is open-ended or not.  Thus, for example:


DrugCo is a major sponsor of a conference, which Prof. X is chairing this year.  This would be "current" because the relationship is expected to end when Prof. X finishes as conference chair.
DrugCo retains Prof. X as a consultant to assist with patent actions.  This would be "ongoing" because the relationship could persist indefinitely.