Standard, IBI indicates the order of the addresses with numbers. You can change this to be an unique number such that an address will always keep the same number. This number is then based on the input order of the addresses. Below is explained how you can change this.
As you can see, the addresses are numbered in increasing order. You can change this by pressing in the top left corner to open the menu
Choose “Other Options”
Turn “Unique numbers for stops instead of sequence number” on
Addresses now keep an unique number.
On the map, this number is indicate in between brackets.