Travel abroad if filled property case against someone

He may ask his/her lawyer if he/she can be represented by thru POA or thru his/her lawyer, per facts and details of the case.

The facts posted suggests that the pending matter is civil proceedings. It is not necessary that, in a civil case, the parties need to be present in every hearing unless appearing party-in-person. Their presence is required only if specifically called by the court or while giving evidence. Even in such cases, absence of 3 0r 4 months could be taken care by the advocate.

nothing more can be advised on the given facts.