On my survival world, I had a fully fueled Tier 1 Rocket and 56 storage spaces, all taken up. Before launching to the moon, I copied the world. I came back to the same world, and the rocket was gone. Mods installed:
Galacticraft Core 1.7-3.0.12.463
Galacticraft Planets 1.7-3.0.12.463
Micdoodle Core 1.7-3.0.12.463
Galaxy Space 1.10 STABLE
Inventory Tweaks 1.58-147
CodeChickenCore 1.7.10-1.0.7.47
Not Enough Items 1.7.10-1.0.5.120
NEI Addons 1.12.14.40
NEI Integration 1.1.2
Optifine HD_U_D6
Waila 1.5.10
Waila Harvestability 1.1.6
VoxelMap (uses liteloader, which is installed) 1.6.15
These are all the mods in my mods folder.
Galacticraft Core 1.7-3.0.12.463
Galacticraft Planets 1.7-3.0.12.463
Micdoodle Core 1.7-3.0.12.463
Galaxy Space 1.10 STABLE
Inventory Tweaks 1.58-147
CodeChickenCore 1.7.10-1.0.7.47
Not Enough Items 1.7.10-1.0.5.120
NEI Addons 1.12.14.40
NEI Integration 1.1.2
Optifine HD_U_D6
Waila 1.5.10
Waila Harvestability 1.1.6
VoxelMap (uses liteloader, which is installed) 1.6.15
These are all the mods in my mods folder.