Is it expected that the previous salary in Salary History will be deleted after Mass Salary Update?

Summary:

After mass updating the salary, the previous salary in salary history was deleted. Is it the expected behavior or it should have retain the previous salary and then another line that will display the updated salary?

Content (required):

Need to confirm if the expected behavior if the mass salary will delete the previous salary or it should have another line that will display the new updated salary.

Version (include the version you are using, if applicable):

22B

Code Snippet (add any code snippets that support your topic, if applicable):