It is possible, but results may vary.
Objects that share the same neutral name will show up as valid in both solutions. Objects that do not share the same neutral name will need to be re-created or updated in the new solver environment.
In other words, if you have a simple cantilever beam with nodal constraints and nodal force loads, you'll probably be able to create a solution in the new solver language and everything will work.
If you have a more complicated model with KEYOPT definitions, complex contact parameters defined, etc., then you will have to do some work...
Thank you for the answer.
Logically, there is a next question that comes to my mind: how can it be exported? Because I've only found an "Import" menu for the different types of pre/postprocessors, and when it comes to export, I've only found a command to export to a bulk.dat file (see attached images).
At a minumum, you need to create a new Abaqus or Ansys solution in the .sim file.
You may also need to make the FEM part the work part, edit the FEM (RMB on the FEM part on the Navigator) and set the solver to Ansys or Abaqus in order to set/update things like assigned materials, etc.