Keep Live Gov vars at 1896000

gistfile1.txt

        if (pindex->nHeight >= chainparams.GetConsensus().FortCanningHeight) {
            // Apply any pending GovVariable changes. Will come into effect on the next block.
            auto storedGovVars = cache.GetStoredVariables(static_cast<uint32_t>(pindex->nHeight));
            for (const auto& var : storedGovVars) {
                if (var) {
                    CCustomCSView govCache(cache);

                    // Add to existing ATTRIBUTES instead of overwriting.
                    if (var->GetName() == "ATTRIBUTES") {
                        auto govVar = mnview.GetAttributes();

                        // One stored var at this height on mainnet.
                        if (Params().NetworkIDString() == CBaseChainParams::MAIN && pindex->nHeight == 1896000)
                        {
                            for (auto it = govVar->attributes.begin(); it != govVar->attributes.end();) {
                                auto key = boost::get<const CDataStructureV0>(&it->first);
                                assert(key);
                                if (key->type != AttributeTypes::Live) {
                                    govVar->attributes.erase(it++);
                                } else {
                                    ++it;
                                }
                            }

                            govVar->Import(var->Export());
                            govCache.SetVariable(*govVar);
                            govCache.Flush();
                        } else {
                            if (govVar->Import(var->Export()) && govVar->Validate(govCache) && govVar->Apply(govCache, pindex->nHeight) && govCache.SetVariable(*var)) {
                                govCache.Flush();
                            }
                        }
                    } else if (var->Validate(govCache) && var->Apply(govCache, pindex->nHeight) && govCache.SetVariable(*var)) {
                        govCache.Flush();
                    }
                }
            }
            cache.EraseStoredVariables(static_cast<uint32_t>(pindex->nHeight));
        }