Yes, we had several Bug s related to it. Currently I can only think of this one which is critical: Samples get cropped after upgrading from 1.6.0 to 1.7.0 and pending a fix.
Beware tho: loading projects saved with newer version into older version is not supported ! We support only going forwards: loading projects saved with older version into the new version, and in this case follow our installation guide in the Release Notes (for specific release) and/or in Firmware Update screen on your Tracker device (for general updating). The guideline above is outdated actually and I’ll update it right now after this comment 
Hope this helps.