I'm aware. But as I mentioned in a previous comment, there have been issues in the past where certain cache/unid items were inconsistent when copied from live > PTR, which is really just a side effect of PTR and not indicative of the actual mechanics. Keep that in mind. All I'm saying is save up all your caches if you want, but if you don't get a single Ancient item out of them, don't say 'it's broken'.
Ofc you can have ancient rorg. caches roll items on opening
Correct, to an extent. The stats (and as far as we know this only affects the MAIN stat) roll on opening. However, the CONTENT (whether you get a RoRG or not) is pre-determined. There is still some gray area revolving around class specific items like wands, sources, mojos, mighty weapons, quivers, etc. However, saying that 'of course you can have an Ancient RoRG if you wait' is shortsighted. We simply don't know if the 'ancient' modifier on an item within a cache is determined upon acquisition or opening, or if this can be retroactive before the patch. Simply put, it's unknown.
Blue hasn't said anything about it, but it could be a live > PTR copy 'bug'. In the past items copied from live caches have had different results on PTR, but this doesn't mean it will be so once the patch hits. If you're going to farm caches anyway, sure, save them up, it might work, but don't count on it.
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MeatHeadGaming - YouTube - Twitch - Facebook - Web