16.2.1.1 Choosing whether to overwrite ditamaps
By default, Mif2Go rewrites .ditamap files each time you run a DITA conversion. Unless the changes you make between conversion runs (changes either to your FrameMaker document or to configuration files) have no effect at all on DITA structure, most likely something will be different in one or more generated maps. On the other hand, if you have edited book or chapter maps by hand, you would not want to lose your edits.
To prevent Mif2Go from overwriting existing DITA maps:
; WriteDitamaps = Yes (default) overwrite existing maps,
; or No (when using hand-edited chapter and book-level maps)
When WriteDitamaps=Yes (the default), existing maps are overwritten. Also, if a FrameMaker file is in a book, and the book file is open, Mif2Go rebuilds the map for the book whenever you convert the file.
If you change the setting of WriteDitamaps from Yes to No for subsequent conversions of the same project, and you make any changes that affect DITA structure, maps can get out of synchronization with topics.
If you set WriteDitamaps=No the first time you run a DITA conversion, Mif2Go will not produce any DITA maps.
> 16 Configuring DITA maps > 16.2 Configuring DITA ditamaps > 16.2.1 Specifying options for ditamaps > 16.2.1.1 Choosing whether to overwrite ditamaps