Before you cut the weaving off your present loom, weave approx. 1 inch of good solid plain weave and then smother it in fray check or even white glue. Wait until it is dry and very secure then make a plain weave shed and insert 1 lease stick beyond the glue line (in between your glue line and the reed), then make the other plain weave shed and insert the other lease stick.
Then you take the tension off at the front and squish it all together and tie up your cross. After you have your cross tied back into the warp you are ready to cut in front of the glue line.
Now you can take the warp off the loom. Release the tension from the back and pull your whole warp out the front. It is helpful to have a 2nd person if the warp is of any length. And you should put some cinch ties along the warp to secure it.
Once you have it all pulled forward you cut the warp at the back of the loom, and carefully, very, very carefully pull all the ends out of the heddles and reed. Tie a knot at that end and you can chain it up to your cross.
When you are ready to put it back on the loom. You put the apron rod through the cross end of your warp at the glue line.