diff --git a/src/diff.js b/src/diff.js
index 4b412bc..99e4684 100644
--- a/src/diff.js
+++ b/src/diff.js
@@ -3,16 +3,13 @@
 var Immutable = require('immutable');
 var utils = require('./utils');
 var lcs = require('./lcs');
-var path = require('./path');
-var concatPath = path.concat,
-                  escape = path.escape,
-                  op = utils.op,
-                  isMap = utils.isMap,
-                  isIndexed = utils.isIndexed;
+var op = utils.op,
+    isMap = utils.isMap,
+    isIndexed = utils.isIndexed;
 
 var mapDiff = function(a, b, p){
   var ops = [];
-  var path = p || '';
+  var path = p || [];
 
   if(Immutable.is(a, b) || (a == b == null)){ return ops; }
 
@@ -20,28 +17,29 @@ var mapDiff = function(a, b, p){
     a.forEach(function(aValue, aKey){
       if(b.has(aKey)){
         if(isMap(aValue) && isMap(b.get(aKey))){
-          ops = ops.concat(mapDiff(aValue, b.get(aKey), concatPath(path, escape(aKey))));
+          ops = ops.concat(mapDiff(aValue, b.get(aKey), path.concat(aKey)));
         }
         else if(isIndexed(b.get(aKey)) && isIndexed(aValue)){
-          ops = ops.concat(sequenceDiff(aValue, b.get(aKey), concatPath(path, escape(aKey))));
+          ops = ops.concat(sequenceDiff(aValue, b.get(aKey), path.concat(aKey)));
         }
         else {
           var bValue = b.get ? b.get(aKey) : b;
           var areDifferentValues = (aValue !== bValue);
           if (areDifferentValues) {
-            ops.push(op('replace', concatPath(path, escape(aKey)), bValue));
+            ops.push(op('replace', path.concat(aKey), bValue));
           }
         }
       }
       else {
-        ops.push( op('remove', concatPath(path, escape(aKey))) );
+        var aValue = a.get ? a.get(aKey) : a;
+        ops.push( op('remove', path.concat(aKey), aValue) );
       }
     });
   }
 
   b.forEach(function(bValue, bKey){
     if(a.has && !a.has(bKey)){
-      ops.push( op('add', concatPath(path, escape(bKey)), bValue) );
+      ops.push( op('add', path.concat(bKey), bValue) );
     }
   });
 
@@ -62,19 +60,19 @@ var sequenceDiff = function (a, b, p) {
     if(diff.op === '='){ pathIndex++; }
     else if(diff.op === '!='){
       if(isMap(diff.val) && isMap(diff.newVal)){
-        var mapDiffs = mapDiff(diff.val, diff.newVal, concatPath(path, pathIndex));
+        var mapDiffs = mapDiff(diff.val, diff.newVal, path.concat(pathIndex));
         ops = ops.concat(mapDiffs);
       }
       else{
-        ops.push(op('replace', concatPath(path, pathIndex), diff.newVal));
+        ops.push(op('replace', path.concat(pathIndex), diff.newVal));
       }
       pathIndex++;
     }
     else if(diff.op === '+'){
-      ops.push(op('add', concatPath(path, pathIndex), diff.val));
+      ops.push(op('add', path.concat(pathIndex), diff.val));
       pathIndex++;
     }
-    else if(diff.op === '-'){ ops.push(op('remove', concatPath(path, pathIndex))); }
+    else if(diff.op === '-'){ ops.push(op('remove', path.concat(pathIndex), diff.val)); }
   });
 
   return ops;
@@ -84,7 +82,7 @@ var primitiveTypeDiff = function (a, b, p) {
   var path = p || '';
   if(a === b){ return []; }
   else{
-    return [ op('replace', concatPath(path, ''), b) ];
+    return [ op('replace', path.concat(''), b) ];
   }
 };
 
@@ -101,4 +99,4 @@ var diff = function(a, b, p){
   }
 };
 
-module.exports = diff;
\ No newline at end of file
+module.exports = diff;
diff --git a/src/path.js b/src/path.js
deleted file mode 100644
index 0771078..0000000
--- a/src/path.js
+++ /dev/null
@@ -1,33 +0,0 @@
-'use strict';
-
-var slashRe = new RegExp('/', 'g');
-var escapedSlashRe = new RegExp('~1', 'g');
-var tildeRe = /~/g;
-var escapedTildeRe = /~0/g;
-
-var Path = {
-  escape: function (str) {
-    if(typeof(str) === 'number'){
-      return str.toString();
-    }
-    if(typeof(str) !== 'string'){
-      throw 'param str (' + str + ') is not a string';
-    }
-
-    return str.replace(tildeRe, '~0').replace(slashRe, '~1');
-  },
-
-  unescape: function (str) {
-    if(typeof(str) == 'string') {
-      return str.replace(escapedSlashRe, '/').replace(escapedTildeRe, '~');
-    }
-    else {
-      return str;
-    }
-  },
-  concat: function(path, key){
-    return path + '/' + key;
-  }
-};
-
-module.exports = Path;
\ No newline at end of file
diff --git a/src/utils.js b/src/utils.js
index 3011ebe..0d0dbce 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -6,8 +6,6 @@ var isMap = function(obj){ return Immutable.Iterable.isKeyed(obj); };
 var isIndexed = function(obj) { return Immutable.Iterable.isIndexed(obj); };
 
 var op = function(operation, path, value){
-  if(operation === 'remove') { return { op: operation, path: path }; }
-
   return { op: operation, path: path, value: value };
 };
 
@@ -15,4 +13,4 @@ module.exports = {
   isMap: isMap,
   isIndexed: isIndexed,
   op: op
-};
\ No newline at end of file
+};