Hi Brian,
One thing to all the problem can not only due to write statement but it can be due to skip statement also.
In your report, after executing from the selection screen it is going to output screen 1 because of some write/skip statements, and due to your ALV report, this screen it getting replaced with 2nd output screen where you cannot see the 1st output screen.
To resolve this problem, debug the report. Don't insert any breakpoints in the report.
First execute your report, now you will be in selection screen. In the Command Field enter /h and press enter.
Now don,t perform any actions directly execute your program, it takes you to the debug screen. From here debug the report and find at what point it is creating output screen due to write/skip statement. Just remove the statement that leads to triggering the 1st output screen.