Don't convert unselected inputs

lib/screens/wallet/wallet_sign_transaction.dart

@@ -1,4 +1,5 @@
 import 'package:coinlib_flutter/coinlib_flutter.dart';
+import 'package:collection/collection.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -170,11 +171,19 @@ class _WalletSignTransactionScreenState
  final privKey = WIF.fromString(wif).privkey;
 
  Transaction tx = Transaction.fromHex(_txInputController.text);
+ final selectedInputResult = await _showInputSelector(tx.inputs.length);
+ if (selectedInputResult == false) return;
+ if (_checkedInputs.values.every((element) => element == false)) return;
 
  // conversion step for cointoolkit start
  tx = Transaction(
- inputs: tx.inputs.map((input) {
- // Determine program from CTK input script data
+ inputs: tx.inputs.mapIndexed((i, input) {
+ if (!_checkedInputs.containsKey(i)) {
+ //don't convert this unselected input, return as is
+ return input;
+ }
+
+ // Determine program from cointoolkit input script data
  final program = Program.decompile(input.scriptSig);
 
  if (program is P2PKH) {
@@ -199,10 +208,6 @@ class _WalletSignTransactionScreenState
  );
  // conversion step for cointoolkit end
 
- final selectedInputResult = await _showInputSelector(tx.inputs.length);
- if (selectedInputResult == false) return;
- if (_checkedInputs.values.every((element) => element == false)) return;
-
  Transaction txToSign = tx;
  _checkedInputs.forEach((key, value) {
  if (value) {