The following materials cannot be saved without usage of glitches: Corrupted Cactus, Corrupted Deadwood, Corrupted Acacia, Corrupted Limestone, Corrupted Tumbleweed, Corrupted.
I have been able to find glitches in order to save them. Please, do not patch out these glitches until the New Corrupted Materials glitch is fixed.
All four of the trees (CC, CD, CA, and C) can be saved by cutting the very bottom of the tree. A full cut is required, but not an actual cut (you can cut the very bottom fully, cutting off nothing while still cutting)
You can also just saw the tree, however this doesn't let you save the raw form.
Corrupted Limestone and Corrupted Tumbleweed are a bit more complicated, requiring extra items. 1: Any item of the same resource type (but specifically a Corrupted Tumbleweed for Corrupted Tumbleweed. 2: Either Drawer.
Put the "new" Corrupted material inside the drawer, then put the original one in. The order you do this in matters greatly. Once you take both out, the new one is fixed.
This trick also works with Corrupted and Corrupted Cactus. Cannot confirm for Corrupted Acacia and Corrupted Deadwood.
I have been researching Corrupted materials ever since I learned they were makeable. Please, fix Corrupted materials not being saveable, it's bad for new players to not be able to get them without knowing unfathomable knowledge.
If you need more about my studies, DM or ping me, I am free to answer any questions needed.