Conversion of PLC Ladder from Allen bradly to Mitshubishi

Dear Sir,
I want to convert my Allen Bradly Ladder logic into Mitshubishi GX
Developer, is there any particular software for this or any different method or video which is helpful for me.

Its going to be a case of one open on one monitor and another open on another monitor and re-write it.

Or just buy a AB PLC and save yourself time, pending on the project size.

Or if you're not familiar with one or the other, pay someone to do it. I learned on Allen Bradley, and where I'm at now I've muddled through learning Mitsubishi enough to maintain, but would be hard pressed to program certain things in it (still working through the manuals on some modules, and haven't had to work with buffer memory in this fashion in some time). Also, if there's any communications you have to account for how you will make them work after conversion (slowly converting from CC-Link to ethernet on MELSEC-A as I can, such fun).

How many steps is your allenbradlley program and what software was it written in. Or what PLC was it and what mitsi are you going to use?

Andy