diff --git a/R/sysdata.rda b/R/sysdata.rda
index 95546511..31f5d03c 100644
Binary files a/R/sysdata.rda and b/R/sysdata.rda differ
diff --git a/data-raw/variables.csv b/data-raw/variables.csv
index d9700f80..a7c6659d 100644
--- a/data-raw/variables.csv
+++ b/data-raw/variables.csv
@@ -144,6 +144,7 @@ document.secureLevel,restriction_level,documentInformationWithheld,FALSE,FALSE,c
 document.secureReasons,restriction_reason,documentInformationWithheldReason,FALSE,FALSE,character,factor,FALSE,TRUE,FALSE,TRUE,TRUE,TRUE,TRUE,FALSE,TRUE
 document.secured,restriction,informationRestricted,FALSE,FALSE,logical,logical,TRUE,TRUE,TRUE,TRUE,TRUE,TRUE,TRUE,FALSE,FALSE
 document.sourceId,source_id,sourceID,FALSE,FALSE,character,uri,TRUE,TRUE,TRUE,TRUE,TRUE,TRUE,TRUE,FALSE,FALSE
+computed_var_from_id_source,source,source,FALSE,FALSE,character,character,TRUE,TRUE,TRUE,TRUE,TRUE,TRUE,FALSE,FALSE,FALSE
 gathering.biogeographicalProvince,bio_province_verbatim,verbatimBioStateProvince,FALSE,FALSE,character,character,TRUE,TRUE,TRUE,TRUE,TRUE,FALSE,FALSE,FALSE,FALSE
 gathering.conversions.century,century,century,FALSE,FALSE,integer,integer,TRUE,TRUE,TRUE,TRUE,TRUE,FALSE,TRUE,FALSE,FALSE
 gathering.conversions.day,day,day,FALSE,FALSE,integer,integer,TRUE,TRUE,TRUE,TRUE,TRUE,FALSE,TRUE,TRUE,FALSE