Insert mode reverts back to Overwrite mode

When a user selects 'insert' mode on a screen, it reverts back to 'overwrite' mode on the next screen. Is there a setting to keep the mode insert/overwrite based on what the user has set?

This is the default, based on your settings in: Custom Settings > General tab > Keyboard emulation.

Differences between 3270 and Windows emulation:

Pressing left arrow to enter a text box from the right side:

• 3270 - cursor moves to end of data in text box.
• Windows - all data in the text box gets highlighted

Pressing right arrow to enter a text box from the left side:

• 3270 - cursor moves to front of data in text box.
• Windows - all data in the text box gets highlighted

Pressing backspace:

• 3270 - cursor moves left one character at a time.
• Windows - cursor moves left one character at a time as it deletes those characters

Default Insert/Overwrite mode:

• 3270 - default is overwrite mode.
• Windows - default is Insert mode