SAP PM MCH01 Change Main plan text and Main item text

[loressap]

Hi everyone,

I need to know how the MCH01 transaction works. I need to change the texts of a multiple maintenance plan text and maintenance item text. In the new values field I inserted the new text (Example) but once saved if I go to IP02 I always find the old text (Taratura Loop). Could anyone help me.

Here you are an example of the problem:

Thank you