You run into your negative BKR registration when you want to borrow money, such as in the form of a mortgage or another type of loan.
As you may already know: after you have paid off the debt in full, a negative BKR registration remains visible with the BKR for another five years. During this period, you are considered a "high-risk case," which can make it complicated to take out a loan or mortgage. Often, remaining on the BKR registration gives a false picture. For example, you have your financial affairs back in order just fine.
The purpose of the BKR system is to protect you from further debt through loans. However, this is not always necessary (anymore); in that case, you want to remove the BKR registration. You do not feel protected, but rather hindered.