I have some trouble with technology introduction... It was some time ago, so now I can't provide highly detailed information. Sorry.
1. I have a Cowshed#1 with tech level = 1.
2. Also I have Laboratory#1, which research tech for cowshed (2nd level).
3. In this time some other player invented 2nd level of cowshed, for example he set license's price = 100 000.
4. I have make an order to buy license of 2nd level for my Cowshed#1, for example I said = 30 000.
5. Some turns my order to buy license was opened, and this order wasn't satisfied (I don't remember now, how much turns it was, look P.S.-section).
6. When order was opened, I invent (in Laboratory#1) 2nd level of cowshed.
7. And I have introduce this new tech in my Cowshed#1 (for a just cost of introduction), but I forgot to close the order!
8. Some time later, when the licence price has decreased to (for example) 25 000, the order has worked! And there was re-introduction of 2nd tech for my Cowshed#1.