1. The immediate thoughts that comes to my mind is "SMART" i.e. either of the party to such litigation is smart.
2. Having thus opined, whichever way you read so and so, first tell this forum following;
2.1 Were you aware of her case which she filed at Nasik? Is she aware of your case which you filed at Kolkatta?
2.2 Has she filed any Execution petition to her Maint. Order at Nasik and is there any Execution Order for Kolkatta suit matter in favor of her?
2.3 Who appeared on her behalf at Kolkatta suit matter bze. of which she was awarded Maint. in your
Divorce suit matter?
2.4 Has Kolkatta Court given Order for 10,000, besides Nasik Court giving Order of 10,000 ?
2.5 I assume either Courts S. 24 HMA were filed by your wife against which maintenance Orders respectively were announced ?
While you appraise this forum with above asked briefs, meanwhile to pacify you my 2 Cents are as follows; You are suggested to pay only 10,000/- (check reading down the Order o kolkatta Court if it is from date of her application or from date of Order?) that also at Kolkatta suit matter of yours so that it kicks up and True Certified Copy of such payment being met by you regularly shall be placed in record at Nasik suit matter of hers to nullify each men sum Order of maintenance which Nasik Court also Ordered accordingly. You need not have to approach for transfer of your divorce suit matter from Kolkatta to Nasik Court. I would suggest in this connection, let her do such leg work (i.e. by approaching Hon'ble Supreme Court such trans-State transfer of family matter suit matters Order's are requested and are 'expensive' way outs. I would suggest not to seek withdrawal of yoru divorce suit matter at all from Kolkatta Court(s). The moment you start following these advice's your worries of 20,000 and also transfer of your case to her jurisdiction will subside and you start concentrating on just one course of action in immediate future i.e. is it that you want to divorce your wife or is it so that you want to live with her un-conditionally ?
BTW, donot answer back to me, questions thus asked by me, were for your esteemed advocate to answer back to you and also some advice's were for you to introspect.