The data that was shared with IPUMS was missing all observations from provinces in Kalimantan, Sulawesi, Maluku, and Papua. This was not the result of any additional trimming on the part of IPUMS. The original survey included 206,484 households, but on account of these missing observations, there are currently only 166,033 households in the sample. The documentation that was shared does not mention these missing observations, but it’s unclear at what stage these observations were lost. I’d really appreciate it if you could point me to the scholars you mention who use microdata from the 1995 SUPAS from these provinces. The IPUMS International team is always looking for opportunities to add data and this may be a good opportunity to update the sample.