Hello, Need to know, if there was a change in the DGN file format from Microstation V8i SS3 to SS10. We have a third-party dependency which in turn has dependency on ODA, that enables us to handle Dgn files. Any previously supported Dgn files will continue to work with newer versions of Microstation select series, as long as there is no structure change to the file format. So my question above pertains to where and how can i find out of format/structure changes to v8i.
Format is not changed so if the graphics elements are the same used then there shouldn't be any issues. Only issues could be in case these DGN contains new Microstation elements which didn't exist in v8 times. Regarding ODA/FME there previously were issues if using element RGB colors or any other additions to v8 DGN after v8 2004. So yes structure is the same for v8 but there are some differences regarding new graphic and non-graphice elements added. OpenDGN is now closed DGN so there is no specification to compare with.