Yosemite Keyboard Text Replacement Issues

Now this is an odd one. In System Preferences/Keyboard I made some entries under the Text tab to allow some commonly used text entries to be replaced when I make a typo error or to be expanded for commonly used phrases. However, the expanded text entries - e.g DCG which produces my full name - were interfering with EchoSign which I use on Safari for electronic document signatures. Every time my initials DCG expanded to my full name in the signature box, Safari crashed horribly. So of course I deleted all of the entries I had made in System Preferences/Keyboard/Text. All good. However, the damn thing keeps repopulating with all the entries which I had deleted! Grrrr! Called Apple Support. Useless! Anyone got any ideas at all as to how I can stop this from happening. Always use the most up to date versions of everything. Would be grateful for any help. Thanks