1. How proceed with demarcation, is there no backup file in RI office or can that RI again cut maps of our area and make a new sheet of records of all plots under sheet 265?
When you knew that the property has been encroached by them what made you to to purchase the same especially when you are aware that they having political influence and they are very hard nuts to crack. Anyway you submit an application to the Tehsildar seeking the help of surveyor to survey the plot and fix the boundaries. Let them give reply denying your request, you may approach court seeking direction to the tahsildar for taking steps on this.
2. What documents should we collect from aru's legal heirs as aru died in 1987 and how?
What document have you collected while purchasing this property
Have you obtained all the property related documents from the vendor who sold the property to you.
Aru's legal heirs should produce his death certificate, legal heirship certificate, partition deed if any, the original parent deed of the proeprty and the tax receipts.
You have not mentioned whether you have obtained all the relevant documents from them while you purchased the property.
3. If we go for court case, is there any chance we could loose??
Why do you want to have negative thought even before trying for a legal solution, you may discuss with your advocate at length and jump into the arena.
4. There is a sewage line of both encroachers in between my plot. How can we proceed to remove that nala??
Please provide me detailed solution.
You can seek mandatory injunction seeking to remove this intruding naala pipe or sewage line, in the same suit.