I have been working on my Zelda 3 Hack Tetra Prism using Hyrule Magic, all was going smoothly working with the overworld editor, until I decided to work on some of the dungeons, the problem I ran into when editing room 146, I added a few hearts in the room , I put some more spikeBlock Sprites in the room, I then saved my work, and went to another room, and then I went back to room 146 and I noticed that were a bunch of items , like "8E" "10" "Vulture"  "Nothing" etc, in room 146 and strangely also in 145, 144, 143, 142, 141. I tried to remove all items from each room , like in 146 and then save and when I come back to the room it has reverted to it previous state, I am sure many other people have ran into this problem. What causes this to happen and but more importantly how do I fix this problem? And what is the best way to avoid this problem in the future?
sometimes I will get "Not enough room for Room Header" and "not enough space for secret items".

I tried to expand the ROM , as I thought that may fix the problem but that did not help.


I would really appreciate it if some one please assist me with this problem I am having, I am sure that this has occurred before in some of the other Zelda 3 Hacks.

As this problem has caused progress on the dungeon editing to come to a grinding halt. 

Also how do I copy certain rooms into a new ROM in the dungeon editor, as I need to restore just rooms 145, and 146 from a previous backup.

Message to Sephiroth3 , please release the source code of Hyrule Magic, so that all of the Zelda 3 Hacking Community may benefit, so people can make improvements to Hyrule Magic, its been over 5 years since a new version of Hyule magic, it is time to take Zelda 3 Hacking to a new level, by pushing the limits of Zelda 3 and reaching new heights, and to do that the Zelda 3 Hacking Community will need the source code so that they can continue development of Hyrule Magic.