We use monthly additions rather than open-ended ones which Huntress seems unable to support. This means I have to use N-Central's billing profile export to create an addition for an incorrect amount, and then have Huntress's billing Sync run the next day to then update the addition amount to the correct value. N-Ventral's billing profile exports aren't the most reliable, and I also don't like having to create these incorrect entries first, when Huntress could just do the whole thing directly and correctly.