It should not be too much of an issue to "pen" it in on a submission sheet. To put your mind at ease, why not just fill out a completely new submission sheet. I had a similar circumstance and I, like you, wanted to make "sure" it was submitted correctly not wanting to leave anything to chance.
If it will put your mind at ease just redo the entire thing. It might take a half hour but it will save you the trouble wondering what will happen over the course of the months that the books are not in your hands.