Saving the "PhysicalGroup" after applying the function "fragment"
Hello. I have a problem with "PhysicalGroup". I create a calculation scheme with the indication of "PhysicalGroup". Then I perform the calculation. As a result of the calculation, I get a curve. I add the found curve to the calculation scheme (use "fragment"). It is necessary to make a calculation taking into account the resulting curve. After using the "fragment" function, the "Physical Group" disappeared. Accordingly, the boundary conditions have disappeared for the calculation scheme and the calculation cannot be performed again. How can I transfer a "Physical group" of geometric elements to a new element created after applying the "fragment" function using the Python API?