Seems it is bug, as last 2 are getting copied

Log a case to Now Support. 

It is copying at my end, added another columns which you are trying. have you customized any field level ACL for these fields ? are you trying to test with admin role ? 

You are saying on native UI, you are able to successfully copy it ? is this personal instance or org instance ?

Thanks,

Harsh

@ramesh_r  Also I want to add one point, try to clear the cache ( using cache.do ) then test it again. if cache is causing this issue then from properties level you can check "Ignored cache" field as true. 

Definitely it should work. I don't think any issue with script. 

Thanks,

Harsh

@hvrdhn88 

I have tried this cache.do also still its not working

@Rameshnathan / @ramesh_r  : Are you trying this on personal instance?  if it is org instance, i would suggest check closely if any script contradicting here, also try to include other column to test if this issue is happening with only one column or many columns . 

Let me know if you have any further questions for me.

Thanks,

Harsh