Is there any tool that exists which it can compare our actual code from the vanilla version? We are running Navision Financials 2.6B.
Navision Developer’s Toolkit. As an end-user, I think you need Application Builder (it might be Solution Developer) and then to buy the Compare & Merge and/or Source Analyzer granules.
Here is another option: http://winmerge.sourceforge.net/ It’s not designed for Navision, so you have to export your objects as text files and compare them outside Navision. I like it for the layout and color highlighting features.