Remove all of the 'add-ons' that you can. You will not be reimbursed for them if you 'let them go with the trailer'.
As an example, if you have 'stabilizers' and you added scissor jacks... the insurance company will not compensate you for the add on scissor jacks. Remove them now while it is in your possession as you will not have a chance later when the insurance company hands over a check and hauls it away. the unit and everything on it will then belong to the insurance company.
2013 Forest River Salem Hemisphere SBT312QBUD
2001 CrewCab F-250 7.3 PowerStroke Diesel
SuperChip, BTS transmission, 6.0 Trans Cooler