ASReml version 2

I have upgraded to version 2. Why don't zero-fixed correlations remain zero?
Does a presented non-zero value have some meaning?
How should the asr file actually be interpreted?

Version 1 asr file:
...
 Residual UnStruct 4 4.46311 4.46311 23.48 0 U
 Residual UnStruct 1 0.00000 0.00000 0.00 0 F
 Residual UnStruct 2 1.54798 1.54798 15.72 0 P
 Residual UnStruct 3 0.00000 0.00000 0.00 0 F
 Residual UnStruct 4 0.00000 0.00000 0.00 0 F
 Residual UnStruct 5 2.58771 2.58771 21.32 0 P
 Tr.TID CORRelat 5 -0.166863 -0.166863 -1.77 0 P
 Tr.TID CORRelat 5 0.00000 0.00000 0.00 0 F
 Tr.TID CORRelat 5 0.00000 0.00000 0.00 0 F
 Tr.TID CORRelat 5 0.00000 0.00000 0.00 0 F
 Tr.TID CORRelat 5 -0.247743 -0.247743 -8.34 0 U
 Tr.TID CORRelat 5 0.478575 0.478575 5.54 0 U
 Tr.TID CORRelat 5 0.00000 0.00000 0.00 0 F
 Tr.TID CORRelat 5 0.795875 0.795875 21.39 0 P
 Tr.TID CORRelat 5 0.00000 0.00000 0.00 0 F
 Tr.TID CORRelat 5 0.00000 0.00000 0.00 0 F
 Tr.TID CORRelat 5 0.290145E-02 0.290145E-02 1.96 0 P
 Tr.TID CORRelat 5 0.860065 0.860065 8.01 0 U
 Tr.TID CORRelat 5 0.968969 0.968969 4.09 0 U
 Tr.TID CORRelat 5 1.30346 1.30346 8.07 0 U
 Tr.TID CORRelat 5 0.696957 0.696957 6.27 0 U
 Warning: Code B - fixed at a boundary (!GP) F - fixed by user
...

Version 2 asr file:
...
 Residual UnStructured 4 4 4.46309 4.46309 23.54 0 U
 Residual UnStructured 5 1 0.00000 0.00000 0.00 0 F
 Residual UnStructured 5 2 1.54798 1.54798 15.72 0 P
 Residual UnStructured 5 3 0.00000 0.00000 0.00 0 F
 Residual UnStructured 5 4 0.00000 0.00000 0.00 0 F
 Residual UnStructured 5 5 2.58770 2.58770 21.31 0 P
 Tr.TID CORRelat 5 -0.166859 -0.166859 -1.78 0 P
 Tr.TID CORRelat 5 0.100000E-01 0.100000E-01 0.00 0 F
 Tr.TID CORRelat 5 0.100000E-01 0.100000E-01 0.00 0 F
 Tr.TID CORRelat 5 0.100000E-01 0.100000E-01 0.00 0 F
 Tr.TID CORRelat 5 -0.247736 -0.247736 -8.31 0 U
 Tr.TID CORRelat 5 0.478578 0.478578 5.56 0 U
 Tr.TID CORRelat 5 0.100000E-01 0.100000E-01 0.00 0 F
 Tr.TID CORRelat 5 0.795875 0.795875 21.55 0 P
 Tr.TID CORRelat 5 0.100000E-01 0.100000E-01 0.00 0 F
 Tr.TID CORRelat 5 0.100000E-01 0.100000E-01 0.00 0 F
 Tr.TID CORRelat 5 0.290146E-02 0.290146E-02 1.96 0 P
 Tr.TID CORRelat 5 0.860068 0.860068 8.03 0 U
 Tr.TID CORRelat 5 0.968946 0.968946 4.09 0 U
 Tr.TID CORRelat 5 1.30348 1.30348 8.12 0 U
 Tr.TID CORRelat 5 0.696966 0.696966 6.27 0 U
 Warning: Code B - fixed at a boundary (!GP) F - fixed by user
...

Tore Ericsson
Skogforsk, Sävar
Sweden
Received on Wed Aug 11 2006 - 14:53:09 EST