Missing info in 1040 schedule E line 3

[Retired Tommy]

Last year, 2018, was our first tax filing after moving to TX from WA.

We still own a rental in WA and entered the income from it into TT Premium online and e-filed.

After reviewing last years work online I don't see that rental income reported on line 3 of the 1040 schedule E form. (Rents received)

It does show up in our 2017 taxes.

What could have happened?

I did find a similar question with an answer over my head.

I would better understand a software glitch.

Is it even possible to have the 1040 schedule E included in a return but leave the value at zero or incomplete.

I would think TT would report an error. This is why I don't think I forget to enter a value.

Any ideas?

Thanks