DITA2Go can convert cross references to help context markers; this is the default for WinHelp:
[HelpOptions] ; Xrefs = Help (make context markers) or None (plain text) Xrefs=Help
You can specify whether to use the cross-reference ID (the default), or the full text of the cross reference:
[HelpOptions] ; XrefType = = Numeric (default) or Full (use only to eliminate dupes) XrefType=Numeric
If you specify XrefType=Full, you get the complete referenced text in the WinHelp context marker. Such text can easily exceed the 63-character size limit for cross-reference IDs in WinHelp, and might contain characters that are not valid in WinHelp IDs.
If you specify XrefType=Numeric (or if you omit the setting entirely) DITA2Go uses internally generated object IDs instead of the full cross-reference text.