Summary

Zabbix support mass update for item preprocessing steps. In current UI - it is not clear what action will be performed (adding, replacing) and UI slightly differs from tags mass update.

Use case

As a user I want consistent mass update UI with clear mass update outcome.

Amendments

UI amendments:

1. Modify item mass update preprocessing screen with checked "Preprocessing steps" (see attached image img1.png) :
   1. remove "Add" link next to "Preprocessing steps" checkbox (img2.png);
   2. add radio button next to "Preprocessing steps" checkbox with options:
      1. "Replace" - default, current functionality:
         1. show preprocessing steps input form - identical to current preprocessing steps input form, except:
            1. Disable "Remove" link for the row, if there is only 1 row left (img1.png).
      2. "Remove all" - remove preprocessing steps for selected items (img3.png).