vB4 to XenForo move

[BHT]

Hi folks,

Its time I looked at moving my 21 year old 5 million+ post vB4 site over to XenForo and I initially have a couple of questions, there may be more.

Once the XenForo licence and software is purchased, can I initially set up a sand box test site to do a trial run with a backup of my site? This will be used to fine tune the colours settings etc before doing a 'live site' upgrade.

Are there any major things/issues to look out for when doing a vB4.2.5 to XF upgrade?
vB4 to XenForo move

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