My laboratory manage bibliography using EndNote, so I can now export data from endnote using bibtext output style and import data in Joomla BibText :))
EndNote just need a little hack to add a bibtext key field after the first bracket, I use the endNote 'Label' field to populate that key that does not seem to be used in Joomla BibTex, it is probably in documents written using bibtext citations. Here is my hacked "generic template" for EndNote output style, you must add similar "Label" field in other templates (reports, thesis, etc. if necessary.

@misc{`Label`,
`Author = {`Author`},`
`Title = {`Title`},`
`Publisher = {`Publisher`},`
`Volume = {`Volume`},`
`Number = {`Number`},`
`Pages = {`Pages`},`
`Month = {`Date`},`
`Note = {`Notes`},`
`Abstract = {`Abstract`},`
`Keywords = {`Keywords`},`
`ISBN = {`ISBN/ISSN`},`
`URL = {`URL`},`
`Year = {`|Year|`} }`