Sales Item Import is Failing When CategoryName is N/A or NA

Details
Sales Item Import is Failing When CategoryName is N/A or NA

Testing Environment Details
Effected Server: JAT
Store(s): Any
Logged in User: sysadmin

Feature: N/A
Related Tickets (Stories or Features): CFAMX-17236
Other Related Links (Confluence, BRDs, Etc...): N/A
Feature Configurations: N/A

Steps to Reproduce:
1. Login to Server Manager
2. Place File with Sales Item Master Import with Category of N/A or NA at W:\MacromatiX\SiteData\JATesting\DataImports\Items\Import
3. Navigate to Data Imports Section > Sales Item Import
4. Right-click job and click Run

Expected Result
Job should run to success and update CategoryName to "DepartmentName - N/A" (e.g. Party Trays - N/A)

Actual Result:
CategoryName with a value of N/A or NA is triggering an error in the Sales Item Import Process