Please allow SBDF read/write API to append new data to an existing SBDF file.
Currently if append new data to an existing SBDF file via SBDF read/write API, the appended data is not recgonized by Spotfire, due to there are 3 bytes(DF 5B 05) at the end of the SBDF file that indicates Magic Number (DF 5B) and SbdfSectionTypeId.TableEnd (05).