Jochav52802 -
That's interesting, I know when RISA first introduced the STAAD import file, RISA often could import files that the STAAD-III interface had screwed up. That was back in the STAAD-III days, I believe and they had developed a windows interface that if you opened a STAAD file that used "generation" codes to create multiple nodes or elements or such, it would re-save it with a "run-on" line that the interface would not be able to read back in. So, all you had to do was open a file and re-save it (without even making any changes) and your file was screwed up. Ugh!
I don't have any specific solutions. Just possible questions and explanatory comments.
Maybe you can manipulate the ASCII file to have longer lines instead of wrapping around to the next line. Come to think of it, that sounds similar to the STAAD issue that I talked about from the old STAAD-III days.
My impression is that RISA hasn't been updating the STAAD import much lately. That was certainly true the last few years that I worked there. But, I don't know anything about what they've been doing since November of 2017 (when I left RISA). You might contact their support group and request an update that could allow RISA to properly read in the file.