After import script from file script is created but have diffrent body like:

12 name="userlst_add" owner="admin"
policy=ftp,reboot,read,write,policy,test,winbox,password,sniff
run-count=0
source=,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,{}

13 name="blokada_add" owner="admin"
policy=ftp,reboot,read,write,policy,test,winbox,password,sniff
run-count=0 source=,,,,,,false,{}

PLEASE help mi solve this problem. All works ok in 3.10.

Maybe you could, explain it more?

This is known problem introduced in v3.11. It will be fixed in next version.