How can I 'absorp' a period with an element entry load?

Summary:

How can I 'absorp' a period for a specific element entry?

Content (please ensure you mask any confidential information):

Base scenario salary A:

• period 1: start date = 2023/1/1 end date = 2023/1/6
• period 2: start date = 2023/2/6 end date 2023/1/8
• period 3: start date = 2023/2/8 end date 4712/31/12

Above, after above was loaded, needs to be updated towards:

• period 1: start date = 2023/1/1 end date = 2023/1/6
• period 2: start date = 2023/2/6 end date 4712/31/12

If we load this now we receive HDL error mentioning there is an overlapping period.

Is above scenario not possible? Should we first delete the initial load data with a DELETE and after the delete load the new desired scenario via MERGE?