Best practice to disable old departments

Summary:

Seeking best practice to disable 15 departments

Content (please ensure you mask any confidential information):

We want to avoid accounting staff from accidently using them and causing errors in reporting. This is our first time disabling old departments (Nav: Setup, Financials, Manage COA value set values, Manage department values) so we want to follow the best practice. Note: we are disabling 15 department values not the department segment.

Per screenshot below, there are two ways to disable department values, unchecking the Enabled box or adding an End date. Both seemed to make the departments unavailable to use in coding. Our users want to know which way Oracle would recommend to disable department values and the difference.