How to add/remove/replace a fixture in an existing CueList?

Answer to Example 2: I will do the renumbering of swapped fixtures in the Fixture Window by renaming their numbers in order to change ther order. With that one is able to react on changed state setups.

Answer to Example 1 can be: open cue 1 in the cuelist, do a fixture copy to the new fixture (select old one, press "copy", enter fixture number of new fixture by keypad, press enter). now the fixture and all it's settings are copied. Now kickout the old fixture. goto next cue, apply changes. The first cue has now the new fixture with the settings of the old one, but the second cue has now both fixtures. Now, one has to copy the settings of the old fixture in the second cue to the new one and knockout the old one, update this.

I am wondering if there is a possibility to do this procedure for all cues in a cue list together?!

Update to Example 1: I wrote a Macro which I can apply to every cue in the cue list like this:
- open cue
- issue macro
- update
- repeat for next cue

The macro looks like that (fixture 44 is replaced by fixture 43):

0.2s Step 2 Clear Command Line
0.2s Step 3 Key Press Backspace 0.08s
0.2s Step 4 Key Press Backspace 0.07s
0.2s Step 5 Key Press 4 0.08s
0.2s Step 6 Key Press 4 0.08s
0.2s Step 7 Key Press Enter 0.09s
0.2s Step 8 Key Press Copy 0.07s
0.2s Step 9 Key Press 4 0.07s
0.2s Step 10 Key Press 3 0.07s
0.2s Step 11 Key Press Enter 0.18s
0.2s Step 12 Key Press Backspace 0.1s
0.2s Step 13 Key Press 4 0.08s
0.2s Step 14 Key Press 4 0.07s
0.2s Step 15 Key Press Enter 0.08s
0.2s Step 16 Screen Press (1078, 628) 0.04s Knockout

Did you try Replicate FIxtures in patch?

Hi, I do not want to replacate a fixture. I want that another new fixture is taken over the programming of an old one. The old one is reused with another programming in the same cue list than.

Copying the fixture's data to the new fixture and then knocking out the old fixture would be the way to do this. There is no magical way for the cuelist to change from using fixtures 1 thru 10 to 11 thru 21.

The only way would be if you were never going to use those fixtures ever again and they had been replaced by a different fixture type for your whole show and then you could change type. But that would remove the old fixture from your show entirely.