[BioC] duplicate entries in org.Hs.egCHRLOC?

[Paul Shannon]

If I ask for the chromosome location of the start of geneID 5004, I get:

 > get ('5004', org.Hs.egCHRLOC)
         9
116125123

But geneID 20 gets me two identical values:

 > get ('20', org.Hs.egCHRLOC)
          9          9
-139021506 -139021506

I noticed this after using toTable to create a data.frame from this  
environment:  I get two identical rows for geneID 20:

 > subset (toTable (org.Hs.egCHRLOC), gene_id=='20')
    gene_id start_location Chromosome
14      20     -139021506          9
15      20     -139021506          9

Is this the expected behavior?

Thanks!

  - Paul