Pasting into post not working

[tartist]

In the MyBB forum that I am moving away from my users select a block of cells in Excel and paste it into a forum post, simply using Ctrl-C and Ctrl-V. The result is an unformatted text list. In my CreateMyBB forum editor this behaviour results in a formatted block which when posted changes to hundreds of text characters tagged with [img] [/img]. Actually it was working a few days ago.

How it should work:
Excel cells copied with ctrl-c: 

Pasted into old forum editor with ctrl-v. Note, it's become a plain text list:

But here's the same pasted into the CreateMyBB forum editor - note formatting:

And then after posting it. Note the image tags:

Any help will be much appreciated 

What I've tried:
I turned off bbcode which worked, but this also disabled [img], [b], etc which I need.