Reply To: Memory Pane: Converting Older .csv Files To .sib ?

If s1b files are truly “just csv files” just copy one to another location and rename it to Mikesfiles.csv etc. then look at it with a txt editor or use excel to examine the file. If so then simply rename the other old csv file to *.s1b.
I don’t know if sdruno allows combining lists with what you already have or whether you need to do that yourself outside of sdruno. If it is just a csv file then it would be a simple matter to do it yourself outside of sdruno.