Found it!
Management SummeryThere are superfluous FixType parameters in the events listed below in the table. Use of the FixType parameter is superseded by the use of the SetBuildFlag parameter in these events.
Solution: Remove the FixType parameter from all of these events.
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There are a few events which start the building of ships using the new, since CW2, parameter 'SetBuildFlag'. Some of them still retain the archaic parameter 'FixType', who's value sets the number of turns that created group is locked. This is because in AACW you could not get the engine to put a unit on the map as is purchased and build it normally. So you just locked it the how ever long you though it should be in pseudo-building.
Since the 'SetBuildFlag' parameter now handles these units as if the player had actually purchased them, they are locked in their build location until they actually complete their building, thus making the 'FixType' parameter not only superfluous, but also opening the door to confusion when the 'FixType' parameter's value is reached and the '{Unit Name} is now active in {Region Name}' message is generated.
The events I found which use the SetBuildFlag parameter and still have the FixType parameter are:
[TABLE="class: grid, width: 500, align: left"]
[TR]
[TD]Script Name
[/TD]
[TD]Event Name
[/TD]
[/TR]
[TR]
[TD]1861 April Campaign
[/TD]
[TD]evt_nam_CSA_CSSArkansasStarted1861
[/TD]
[/TR]
[TR]
[TD]CSA Events
[/TD]
[TD]evt_nam_CSA_CSSMississippiStarted1861
[/TD]
[/TR]
[TR]
[TD]CSA Events
[/TD]
[TD]evt_nam_CSA_CSSTennesseeStarted1861
[/TD]
[/TR]
[TR]
[TD]CSA Events
[/TD]
[TD]evt_nam_CSA_Norfolk1861
[/TD]
[/TR]
[TR]
[TD]CSA Events
[/TD]
[TD]evt_nam_CSA_LiverpoolRams1863B
[/TD]
[/TR]
[TR]
[TD]USA Events
[/TD]
[TD]evt_nam_USA_EricssonFolly1861
[/TD]
[/TR]
[/TABLE]