You said: " so I don't mess up my current information with "maybe" data I add a second indivual and connect them via the ALIA tag."
That's interesting. What do you mean "connect them". I believe that gedcom is a lineage based connective system.
I have been asking for how a dotted line connection, or "might be" connection to somehow be introduced into FTM. I presume that Gedcom does not provide for dotted line, or "maybe" connections?
For now, my work-around is, create two records under the following names:
John Smith is not attached to the suspected parents. He has a note "might be a son of ...."
[John Smith?] is attached to the prospective parents with a note: See John Smith for research.