Jenkins ver. 2.46.2
Credentials Plugin 2.1.13
Blue Ocean 1.0.1

Steps to reproduce:
1. create a credential
2. use that credential in you projects (run builds)
3. go to "Credentials"
4. select the entry for editing and click on "update"
5. change the "description" field
6. click on "save"

Effect:
"Usage" history will be erased.

Expected:
"Usage" history should be still there - because nothing relevant has changed.

Meta item data:
Store = Jenkins
Scope = (global)
"ID", "Username" and "Password" field has not been changed.