When you edit the design in memory, changes automatically pass to downstream tools for the remainder of the Vivado IDE Tcl session. This lets you apply changes to the active design and to save them for future attempts.
Select to save constraints changes for later use. Use this command to write a new constraints file or override the original file.
Note: Exporting constraints runs the
write_xdc Tcl command. Refer to
Vivado
Design Suite Tcl Command Reference Guide (UG835) for details.