How come when I put doodad Sprites from Scmdraft then save it and open it in scxe they disappear?

Is scx BW or Vanilla? I can't remember.

scxe = starcraft x-tra editor

X-tra Editor doesn't support many sprites that SCMD2 and starforge support, and deletes them upon opening the map. Solution: Don't use X-tra Editor!

Switching map editors is generally bad for a multitude of reasons... For example, StarForge will make any sound file corrupt and delete itself, and also on rare occasions change properties of particular sprites. X-tra Editor doesn't support as much as SCMD2 and SF and deletes a few dozen types of units/sprites, usually without prompting or stating "There were x number of illegal units" as a fair warning. X-tra editor also frowns upon null terrain and non-isometric tiling. SCMD2... Hmm... I haven't found one in particular yet, but I might, someday.

scx is expansion scm is vanilla

Don't use X-tra with the other editors, it often has problems working with their terrain and their doodads, but if you don't want it to screw up doodads, just use SCM Draft, since SF will automatically place doodads with their sprites separate.