There is a lot of consistency among those who experience the mandala effects. You can ask them, “What is this thing like?” and they will often give you the same answer as millions of others, the old timestream answer. In some cases, though, people remember different versions.
This is not strange, and any confusion about it comes from the idea that there is one “old” reality and one “new”. Our timestream has been shifting constantly, and things may have changed multiple times.
Which version(s) you remember depends on if you ever paid attention to the thing to begin with, if you are strongly emotionally connected to it, if you have encoded it mentally through repeated exposure, and from where in your energy system you are processing when you are trying to recall the memory.