Documentation plays a crucial role in IT project management, particularly in the early stages, where it helps define requirements, establish goals, and mitigate risks. Ensuring documentation quality and consistency remains a challenge, necessitating adherence to established standards such as IEEE 830 and ISO/IEC 12207. In our previous research, we proposed a model transformation chain to facilitate the generation of IT project artefacts, which are offered as a solution in last 5 years scientific papers. This paper expands on that work by examining how documentation elements can be systematically extracted and structured from the transformation chain more detailed representation. We discuss the elements of documentation that can be derived and mapping components for extracting relevant information from the artefacts already developed in the project. Our findings highlight the potential to improve documentation quality and reduce manual effort. A case study demonstrates the practical application of our framework to a small-scale IT project documentation.