I am attempting to update the priority field in my project using a CSV import. I can verify that my import is updating the priority field but the result is a different number than what is contained in the file I am importing. I have defined priorities numerically as 0 to 30 in my issue priorities to match the priority number of the projects we have in our backlog.
For example my csv file contains a priority of 17 and the import changes the priority to 18. I sent another example of priority 21 and the resulting change was to 26.