Please complete the following information:

• Forge Version: 1.12.2-forge-14.23.5.2860
• BuildCraft Version (Add Hash if from github): buildcraft-all-7.99.24.8 (I got from curse forge)
• Any additonal mods: angelRingToBauble-1.12-0.3.1.50+d4e654e , Baubles-1.12-1.5.2 , bc-ore-processing-7.99.24.4-1 , CodeChickenLib-1.12.2-3.2.3.358-universal , conarm-1.12.2-1.2.5.10 , EnderStorage-1.12.2-2.4.6.137-universal , Forgelin-1.8.3 , ironchest-1.12.2-7.0.72.847 , jei_1.12.2-4.15.0.275 , Mantle-1.12-1.3.3.55 , OptiFine_1.12.2_HD_U_G5 , SpartanShields-1.12.2-1.5.4 , TConstruct-1.12.2-2.13.0.183

To Reproduce
Steps to reproduce the behavior:

1. Create or Join an existing world
2. Place down any BC pipes
3. Save and exit
4. Rejoin
5. Old pipes break but new pipes work fine until you repeat this