Hi Canute,
as far as the UK is concerned, I believe that the references below cover your situation.
1) if you send in the SRG 1104 you will get a new EASA licence without any further training
2) if you want to renew an expired rating there is no minimum hours required anymore
3) I have seen a converted EASA licence with no valid type rating on the front.
you can never be 100% sure about these things but suggest you send the SRG 1104 which can be done on line now and see what happens before you waste money on flight training for a type you are not going to fly longer term
CAP 804, P.168
2.5 JAR licences issued before 17 September 2012, that were fully compliant with JARFCL, automatically become Part-FCL licences. The legislation requires the physical replacement of JAR licences with their Part-FCL equivalents on calendar expiry (so that all are replaced before 8 April 2018).
CAP 804, P.283
4.1 United Kingdom Alternative Means of Compliance AltMoC1 FCL.740(b)(1)
Revalidation and renewal of Class and Type Ratings.
Alt MoC1 FCL.740(b)(1) – Validity and renewal of class and type ratings
RENEWAL OF CLASS AND TYPE RATINGS: REFRESHER TRAINING
(a) Paragraph (b)(1) of FCL.740 determines that if a class or type rating has lapsed, the applicant shall take refresher training at an ATO. The objective of the training is to reach the level of proficiency necessary to safely operate the relevant type or class of aircraft. The amount of refresher training needed should be determined on a case-by-case basis by the ATO