well I don’t know what you want nor recall this campaign but in 4.1.1 there is Exercise Poseidon if you want to use it.
Also there is no problem in the campaign you mention in IKAROS 4.0.0, unless you mean why this campaign ain’t complete and workable?
As I told you in the documents folder there is your answer:
C:\Falcon BMS 4.33 U1\Data\Add-On Ikaros\Docs\Campaigns
and open the Exercise Poseidon.pdf
There you have the campaign info.
in folder
C:\Falcon BMS 4.33 U1\Data\Add-On Ikaros
there is the
Ikaros Settings.exe
run it
expand the Ikaros Theater Settings
expand Database
Select Campaign Poseidon
Apply changes
Go fly it.
About the Campaign you mention you can’t fly it cause as said in the release:
https://www.benchmarksims.org/forum/showthread.php?29515-IKAROS_v4-0-0-0
Campaigns
The theater includes four (4) campaigns. Although, in this version, the structure is ready (you can find .pdf describing the campaigns in Add-On Ikaros\Docs\Campaigns), the campaigns are not playable at this moment, since only the units and squadrons are missing to be fully ready. Since we decided to release this theater now, there was no time left to add the necessary units. This is the easy part and in the next version, all campaigns will be playable.
Have fun.