First of all, sorry for my bad english

Anyway, let's get started.. I've two questions/scenarios, hopefully someone can help me:
Can I convert a forum with IPB 3.4.x to the latest version of phpBB without losing any data?
I've seen there is a convertor for that version.. but, my doubt is, is it still buggy? It's updated regularly?
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It's more safe to do that conversion using an intermediate platform such as SMF?
For example, IPB --> SMF, and then SMF --> phpBB 3.2.2
Which of these two scenarios it's more safe and has more possibilities to be done without any problem/errors, by a semi-noob?

So, what do you suggest?
thx!