[Chimera-users] HELIX/SHEET/CONECT records for non-existent bonds/atoms are being inserted into file.pdb when pdbrun nouser cat > file.pdb is run

Hi, If I load a pdb, display only selected atoms/bonds, then do pdbrun nouser cat > file.pdb, the outputted pdb file also has HELIX/SHEET/CONECT records for non-existent bonds/atoms (as if the pdb file in its entirety was written out). Is this a bug or a feature? Is there some way to completely turn off output of HELIX/SHEET/CONECT records? Thanks, Sabuj Pattanayek