Nope.
When this first came to light, they passed this off as an oversight, a mistake. The electoral commission accepted this and fined them accordingly.
What's now come to light is that this was perhaps not a mistake, but deliberate non-disclosure - a criminal offence in itself. I gather there was correspondence between the allegedly guilty parties and their lawyers advising them that the donations must be disclosed, and on the face of it, this advice was actively ignored. Not an oversight at all.
If this proves to be the case, heads will roll, at least. It's far more serious than we were initially led to believe.