How to properly add Envelope Points into a created Pooled Automation Item?

[Zly]

How do I put enveloper points into pooled Automation Items?

Every time I try to do it, they are either:
1. Doesn't add the points.
2. Adds them, but upon moving the Items, the points literally delete themselves. Which makes no sense at all...

It only works if I don't pool the Automation Items, which in my case is not a good thing to do, makes my resulting envelopes inconvenient to use.

How do I properly do it? I tried many ways, and it's just so frustrating at this point that something this simple just doesn't work...

Here's an example of how I try to do it:

for index = 0, items_count - 1 do
    local item	   = reaper.GetSelectedMediaItem(0, index)
    local item_pos = reaper.GetMediaItemInfo_Value(item, "D_POSITION")
    local item_len = reaper.GetMediaItemInfo_Value(item, "D_LENGTH")

    -- returns from 0 to 1.
    local evaluated_point = found_preset(index, item)

    local ai_index = reaper.InsertAutomationItem(
        envelope,
        index % 2 + 1, -- is either 1 or 2, so we have only two pools
        item_pos, item_len
    )

    -- create points only for first two Automation Items,
    -- because we only have two pools.
    if index <= 1 then 
        reaper.InsertEnvelopePointEx(
            -- env
            envelope,
            -- autoitem_idx
            index % 2 + 1,  -- is ALSO either 1 or 2
            -- pos, val
            item_pos + item_len / 2, evaluated_point,
            -- shape, tension
            1, 1,
            -- isSelected, noSort
            false, true
        )
    end
end

[Zly]

Apparently, enabling `noSort` will break the envelope, even if you sort them after the process.