No. There is no synchronization. This message is shown in console: ...
Are you sure you had receiver_76 in the directory before trying to resync? As block 304000 is where it rolls from 75 to 76.
Of course, I'm sure. I replaced it with this file
http://devcoin.darkgamex.ch/receiver_76.csv for the last time before synchronization.
# ls -lh ~/.devcoin/receiver/receiver_7*
-rw-r--r-- 1 user user 5.1K May 6 2017 /user/.devcoin/receiver/receiver_70.csv
-rw-r--r-- 1 user user 5.1K Jun 10 2017 /user/.devcoin/receiver/receiver_71.csv
-rw-r--r-- 1 user user 8.1K Jul 5 13:00 /user/.devcoin/receiver/receiver_72.csv
-rw-r--r-- 1 user user 6.7K Aug 5 14:00 /user/.devcoin/receiver/receiver_73.csv
-rw------- 1 user user 5.8K Sep 18 01:55 /user/.devcoin/receiver/receiver_74.csv
-rw-r--r-- 1 user user 4.5K Oct 5 13:00 /user/.devcoin/receiver/receiver_75.csv
-rw-r--r-- 1 user user 6.5K Dec 10 12:00 /user/.devcoin/receiver/receiver_76.csv
-rw-r--r-- 1 user user 6.2K Dec 5 16:00 /user/.devcoin/receiver/receiver_77.csv
-rw------- 1 user user 2.8K Feb 8 2015 /user/.devcoin/receiver/receiver_7.csv