The DITA Open Toolkit release 1.2 or above provides a DITA to Word transforming function to transform DITA source files to output in Microsoft® Word RTF file. The whole structure of the output file is the same as the structure designed in the ditamap file of the DITA source files.
To avoid losing files in the final output, make sure the ditamap file contains all topics which are cross referenced from within any individual topics.
You can use an ant script to transform DITA source files to word output. See Transforming DITA to Word with Ant script for more details.
You can also use the Java™ command for transform. See Transforming DITA to Word with Java command for more details.
There are several limitations of the current DITA to Word transforming tool when processing. See Known Limitations for details.